CoMakingSpace Wiki - User Contributions [en]

Project:Geopolymer Chess Figures

2020-12-09T16:13:58Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]
*[https://aip.scitation.org/doi/pdf/10.1063/1.5003505?class=pdf scitation.org -> A Review in Geopolymer Binder with Dry Mixing Method]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''': 
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g trass powder (Trass is the local name of a volcanic tuff occurring in the Eifel, Germany) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem to get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g trass powder 
add 100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

===Trial 4===

'''the activator''': 
30g water 
add 18g NaOH 
add 40g sodium silicate

'''the aggregate''': 
140g trass powder 
add 200g white sand 
add 4g titan white (just for the color) 
add 80g water 

add the activator to the aggregate

This recipe was from another web page. In my opinion there are two main differences. The mix ratios differ greatly. There is way more water involved as needed to dissolve the lye. And the aggregate is mixed with water before the activator is added.

The aggregate was creamy after mixing with water. When I added the activator it turned into a pourable liquid. That looked promising - at first.

I filled the cases and baked them in the drying oven at 70°C for about two days. The result was not durable at all. [[#Figures Trial 2 from Material Trial 4|It crumbled literally at sight]].

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

===Figures Trial 2 from Material Trial 4===
A total fail.

[[File:Airlag chess figures 20191013 161728.png|100px]]

===One Year later===
As you can imagine, I wasn't pleased by the results I documented above. I wasn't even writing about my last attempt with Material Trial 3, what had been the most promising.
No photos, sorry ;)
As far as I remember, I filled my cases as good as possible, baked them at about 60° and waited for a week or so. Then I carefully removed the figures from the cases. Still no better result. The material was just as hard as chalk.
So I put the figures aside in a bookcase and forgot about them. For a whole year.
Recently I stumbled over the figures. Just out of curiosity or maybe to finally throw them away, I took one. It felt hard. Totally not like chalk. The figures are hard as stone. Maybe not as hard as concrete but definitely no longer crumbling.

So the basic chemistry works! It just takes way longer than expected to turn solid.

[[Category:Casting]]
[[Category:Toys & Games]]

Project:Geopolymer Chess Figures

2019-10-18T13:22:30Z

Airlag:

Project:Geopolymer Chess Figures

2019-10-15T17:17:35Z

Airlag: /* Trial 2 */

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''': 
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g trass powder (Trass is the local name of a volcanic tuff occurring in the Eifel, Germany) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem to get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g trass powder 
add 100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

===Trial 4===

'''the activator''': 
30g water 
add 18g NaOH 
add 40g sodium silicate

'''the aggregate''': 
140g trass powder 
add 200g white sand 
add 4g titan white (just for the color) 
add 80g water 

add the activator to the aggregate

This recipe was from another web page. In my opinion there are two main differences. The mix ratios differ greatly. There is way more water involved as needed to dissolve the lye. And the aggregate is mixed with water before the activator is added.

The aggregate was creamy after mixing with water. When I added the activator it turned into a pourable liquid. That looked promising - at first.

I filled the cases and baked them in the drying oven at 70°C for about two days. The result was not durable at all. [[#Figures Trial 2 from Material Trial 4|It crumbled literally at sight]].

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

===Figures Trial 2 from Material Trial 4===
A total fail.

[[File:Airlag chess figures 20191013 161728.png|100px]]

[[Category:Casting]]
[[Category:Toys & Games]]

Project:Geopolymer Chess Figures

2019-10-15T17:13:23Z

Airlag: /* The Chess Figures */

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''': 
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g trass powder (trass is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem to get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g trass powder 
add 100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

===Trial 4===

'''the activator''': 
30g water 
add 18g NaOH 
add 40g sodium silicate

'''the aggregate''': 
140g trass powder 
add 200g white sand 
add 4g titan white (just for the color) 
add 80g water 

add the activator to the aggregate

This recipe was from another web page. In my opinion there are two main differences. The mix ratios differ greatly. There is way more water involved as needed to dissolve the lye. And the aggregate is mixed with water before the activator is added.

The aggregate was creamy after mixing with water. When I added the activator it turned into a pourable liquid. That looked promising - at first.

I filled the cases and baked them in the drying oven at 70°C for about two days. The result was not durable at all. [[#Figures Trial 2 from Material Trial 4|It crumbled literally at sight]].

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

===Figures Trial 2 from Material Trial 4===
A total fail.

[[File:Airlag chess figures 20191013 161728.png|100px]]

[[Category:Casting]]
[[Category:Toys & Games]]

File:Airlag chess figures 20191013 161728.png

2019-10-15T17:12:19Z

Airlag: figures trial 2 - total fail

== Summary ==
figures trial 2 - total fail

Project:Geopolymer Chess Figures

2019-10-15T17:05:53Z

Airlag: /* Portland Cement Free Concrete */

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''': 
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g trass powder (trass is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem to get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g trass powder 
add 100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

===Trial 4===

'''the activator''': 
30g water 
add 18g NaOH 
add 40g sodium silicate

'''the aggregate''': 
140g trass powder 
add 200g white sand 
add 4g titan white (just for the color) 
add 80g water 

add the activator to the aggregate

This recipe was from another web page. In my opinion there are two main differences. The mix ratios differ greatly. There is way more water involved as needed to dissolve the lye. And the aggregate is mixed with water before the activator is added.

The aggregate was creamy after mixing with water. When I added the activator it turned into a pourable liquid. That looked promising - at first.

I filled the cases and baked them in the drying oven at 70°C for about two days. The result was not durable at all. [[#Figures Trial 2 from Material Trial 4|It crumbled literally at sight]].

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

[[Category:Casting]]
[[Category:Toys & Games]]

Project:Geopolymer Chess Figures

2019-10-15T17:03:20Z

Airlag: /* Portland Cement Free Concrete */

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''': 
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g trass powder (trass is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem to get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g trass powder 
add 100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

===Trial 4===

'''the activator''': 
30g water 
add 18g NaOH 
add 40g sodium silicate

'''the aggregate''': 
140g trass powder 
add 200g white sand 
add 4g titan white (just for the color) 
add 80g water 

add the activator to the aggregate

This recipe was from another web page. In my opinion there are two main differences. The mix ratios differ greatly. There is way more water involved as needed to dissolve the lye. And the aggregate is mixed with water before the activator is added.

The aggregate was creamy after mixing with water. When I added the activator it turned into a pourable liquid. That looked promising - at first.

I filled the cases and baked them in the drying oven at 70°C for about two days. The result was not durable at all. It crumbled literally at sight.

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

[[Category:Casting]]
[[Category:Toys & Games]]

User:Airlag

2019-10-15T16:45:20Z

Airlag:

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.

</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into buttons. This project was very famous among my school mates. I sold those buttons for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I polished it and combined it with other materials like crystals, copper wire inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

=== Projects made at the CoMakingSpace ===
* [[Project:Airlag chess figures|chess figures made out of liquid stone]]

User:Airlag

2019-10-10T17:57:32Z

Airlag:

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.

</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into buttons. This project was very famous among my school mates. I sold those buttons for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I polished it and combined it with other materials like crystals, copper wire inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

=== Projects made at the CoMakingSpace ===
* [[Airlag chess figures|chess figures made out of liquid stone]]

User:Airlag

2019-10-10T17:55:23Z

Airlag:

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.

</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into buttons. This project was very famous among my school mates. I sold those buttons for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I polished it and combined it with other materials like crystals, copper wire inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

=== Projects made in the CoMakingSpace ===
* [[Airlag chess figures|chess figures made out of liquid stone]]

Project:Geopolymer Chess Figures

2019-10-10T17:51:02Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''': 
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem to get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
add 100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:38:08Z

Airlag: /* Trial 2 */

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem to get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:26:50Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber. I'm not finished jet but I expect there will be lots of leftovers.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:17:32Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam, a penknife and glue to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:11:34Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly built using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:10:25Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The hardened material is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:08:56Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#Figures Trial 1 from Material Trial 3|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:06:17Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g water 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g water 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g water 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures ([[#The Chess Figures|see below]]). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:04:06Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is vulcanic ash) 
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T17:01:24Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is old vulcanic ash)
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T16:57:44Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag|Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is old vulcanic ash)
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T16:57:13Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[User:Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is old vulcanic ash)
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T16:56:07Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=[[Airlag]]
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is old vulcanic ash)
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

User:Airlag

2019-10-10T16:52:40Z

Airlag:

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.
</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into buttons. This project was very famous among my school mates. I sold those buttons for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I polished it and combined it with other materials like crystals, copper wire inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

=== Projects made in the CoMakingSpace ===
* [[Airlag chess figures|chess figures made out of liquid stone]]

Project:Geopolymer Chess Figures

2019-10-10T16:33:48Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time - maybe
|initiator=Airlag
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, [[Drying Oven|drying oven]]
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is old vulcanic ash)
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T15:51:34Z

Airlag:

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=christmas time- maybe
|initiator=Airlag
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, drying oven
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is old vulcanic ash)
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

Project:Geopolymer Chess Figures

2019-10-10T15:50:18Z

Airlag: Created page with "{{ProjectInfoBox |project title=Chess Figures |image=Airlag chess figures 20191004 185618.png |status=in progress |date=Sept.2019 - |initiator=Airlag |team= |materials=styrene..."

{{ProjectInfoBox
|project title=Chess Figures
|image=Airlag chess figures 20191004 185618.png
|status=in progress
|date=Sept.2019 -
|initiator=Airlag
|team=
|materials=styrene foam, silicone rubber, alkali activates silicates
|tools=sharp knife, drying oven
|software=
|cost= about 80 €
}}
This is my first project I'm doing in the CoMakingSpace for real. I thought about a few other projects but those never made it past the thinking and sketching part.

A few months ago I stumbled over some information about Geopolymers in the internet:
*[https://de.wikipedia.org/wiki/Geopolymer wikipedia -> Geopolymer]
*[https://www.youtube.com/watch?v=rTc0WOPTNP8 YouTube -> Vulkanstein, der Baustoff der Zukunft?]
*[https://www.youtube.com/watch?v=Whjpa8rhe-M YouTube -> Cement From Trash: Green Alkali-Activated Cements]
*[https://ger.gillmanbuilders.com/geopolimernyj-beton-svoimi-rukami-v-domashnih gillmanbuilders -> Was ist Geopolymer Beton und wie man es selbst kocht]

and several more.
(In this context it is irrelevant whether it is historical correct if the pyramids were partly build using concrete or not)

The recipe varies from website to website. Wiki explains that there is a wide variety of ingedients that can replace each other. Therefore I started my own experimental research with available or easily accessable materials.

One of the ingredients is soda lye (NaOH). This chemical is corrosive.

The materials and chemicals aren't expensive. The most expensive is definitely the silicone rubber.

==Portland Cement Free Concrete==
===Trial 1===

'''the activator''': 
6g H2O 
add 4g NaOH slowly because the chemical reaction produces heat 
add 25g sodium silicate

'''the aggregate''':
185g sand (unknown origin, turned out it contained lots of limestone) 
add 100g Zeolith powder

add the activator to the aggregate

Zeolith is a relatively cheap mineral. I ordered some powder. I got granumate instead. I tried anyways.

The resulting mixture was in no way pourable. I tried to pack it, then I let the chemistry magic do its job.

[[File:Airlag chess figures 20190821 173653.png|100px]] [[File:Airlag chess figures 20190821 174346.png|100px]]

After a week it was hard but porose and crumbly.

[[File:Airlag chess figures 20191010 152328.png|100px]]

===Trial 2===

'''the activator''': same as above 
6g H2O 
add 4g NaOH 
add 25g sodium silicate

'''the aggregate''': 
200g tuff powder (tuff is old vulcanic ash)
100g white sand from a pet shop

add the activator to the aggregate

The resulting mixture looked like moist sand but was very squashy. The mixture was not pourable. 
After a week it was still moist and squashy. 
Baking it in a drying oven at 80°C for 3 hours turned it to a rock. 
After another week I discovered that the reference body shows some cracks. 
Several weeks later it seems to sweat out some kind of nearly white powder. The cracks seem get smaller.

[[File:Airlag chess figures 20190906 170024.png|100px]]
[[File:Airlag chess figures 20191010 152545.png|100px]]

===Trial 3===

'''the activator''': same as above just 4 times more of it 
24g H2O 
add 16g NaOH 
add 100g sodium silicate

'''the aggregate''': 
200g tuff powder 
100g white sand

add the activator to the aggregate

The resulting mixture is creamy but still not pourable. However, I tried this mixture for a first atempt on the chess figures (see below). 
This time I put it immediately into the drying oven at about 60°C for 3 hours. The resulting reference body seemed hard but it isn't entirely. Hitting the edge of a table caused a dent in the reference body. One week later nothing has changed. The reference body is as durable as chalk.

[[File:Airlag chess figures 20190914 134952.png|100px]]
[[File:Airlag chess figures 20191010 152704.png|100px]]

==The Chess Figures==
I want to make chess figures out of liquid stone. 
For this I need casts. 
To make casts I need prototype figures.

I decided to use styrene foam and a penknife to create my prototypes. I had some square meters of 5mm panels lying around. So I used that material. It's very easy to cut but it's hard to carve tiny details. The material tends to crumble if you don't use the sharpest possible knife. 
I wasn't satisfied with the first set of figures, so I made a second set.

Next I created small boxes for each figure out of the same material. I glued one figure to the bottom of each box, then I poured silicone rubber in the box. Two hours later I removed the box and cut the silicone rubber in half. After removing the remains of the prototype figure the reusable cases for the stone figures are finished.

I didn't make much pictures. Shame on me. I only have this picture of the first set of prototype figures.

[[File:Airlag chess figures 20191010 165559.png|120px]]

===Figures Trial 1 from Material Trial 3===
Material Trial 3 seemed promising enough, so I poured it as good as possible into the silicone cases. The material was creamy, not liquid. So I ended up with several bubbles. The horse has no chin. The queen broke in half. Anyways, it's the first attempt. So here are the results.

[[File:Airlag chess figures 20191004 190213.png|100px]]
[[File:Airlag chess figures 20191004 190141.png|100px]]
[[File:Airlag chess figures 20191004 190113.png|100px]]
[[File:Airlag chess figures 20191004 190047.png|100px]]
[[File:Airlag chess figures 20191004 185850.png|100px]]

[[File:Airlag chess figures 20191004 185636.png|100px]]
[[File:Airlag chess figures 20191004 185619.png|100px]]

And then I threw them away. Next try will be better :-)

File:Airlag chess figures 20191004 185619.png

2019-10-10T15:40:08Z

Airlag: figure set 1b

== Summary ==
figure set 1b

File:Airlag chess figures 20191004 185636.png

2019-10-10T15:39:10Z

Airlag: figure set 1a

== Summary ==
figure set 1a

File:Airlag chess figures 20191004 185850.png

2019-10-10T15:37:17Z

Airlag: chess figures queen

== Summary ==
chess figures queen

File:Airlag chess figures 20191004 190002.png

2019-10-10T15:35:16Z

Airlag: chess figures king

== Summary ==
chess figures king

File:Airlag chess figures 20191004 190047.png

2019-10-10T15:33:41Z

Airlag: chess figures knight

== Summary ==
chess figures knight

File:Airlag chess figures 20191004 190113.png

2019-10-10T15:32:38Z

Airlag: chess figures bishop

== Summary ==
chess figures bishop

File:Airlag chess figures 20191004 190141.png

2019-10-10T15:31:20Z

Airlag: chess figures rook

== Summary ==
chess figures rook

File:Airlag chess figures 20191004 190213.png

2019-10-10T15:28:41Z

Airlag: chess figures pawn

== Summary ==
chess figures pawn

File:Airlag chess figures 20191010 165559.png

2019-10-10T15:05:38Z

Airlag: Prototype figures first set

== Summary ==
Prototype figures first set

File:Airlag chess figures 20191010 152704.png

2019-10-10T14:13:51Z

Airlag: Geopolymer reference body 3

== Summary ==
Geopolymer reference body 3

File:Airlag chess figures 20190914 134952.png

2019-10-10T13:57:34Z

Airlag: Geopolymer mixture 3

== Summary ==
Geopolymer mixture 3

File:Airlag chess figures 20191010 152545.png

2019-10-10T13:39:48Z

Airlag: Geopolymer reference body 2

== Summary ==
Geopolymer reference body 2

File:Airlag chess figures 20191010 152328.png

2019-10-10T13:32:08Z

Airlag: Geopolymer reference body 1

== Summary ==
Geopolymer reference body 1

File:Airlag chess figures 20190906 170024.png

2019-10-10T13:20:12Z

Airlag: Geopolymer mixture 2

== Summary ==
Geopolymer mixture 2

File:Airlag chess figures 20190821 174346.png

2019-10-10T12:39:10Z

Airlag: Geopolymer reference block 1

== Summary ==
Geopolymer reference block 1

File:Airlag chess figures 20190821 173653.png

2019-10-10T12:36:32Z

Airlag: Geopolymer mixture

== Summary ==
Geopolymer mixture
== Licensing ==
{{CC-by-sa-4.0}}

File:Airlag chess figures 20191004 185618.png

2019-10-10T10:58:19Z

Airlag: first atempt of stone figures

== Summary ==
first atempt of stone figures
== Licensing ==
{{CC-by-sa-4.0}}

User:Airlag

2019-02-07T19:33:50Z

Airlag: /* Project from the late 1990s */

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.
</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into buttons. This project was very famous among my school mates. I sold those buttons for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I polished it and combined it with other materials like crystals, copper wire inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

User:Airlag

2019-02-07T19:31:58Z

Airlag: /* Projects from the 1980s */

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.
</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into buttons. This project was very famous among my school mates. I sold those buttons for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I polished it and combined it with other materials like minerals, copper inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

User:Airlag

2019-02-07T00:26:07Z

Airlag: /* Project from the late 1990s */

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.
</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into stickers. This project was very famous among my school mates. I sold those stickers for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I polished it and combined it with other materials like minerals, copper inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

User:Airlag

2019-02-07T00:23:47Z

Airlag: /* Projects from the 2000s */

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.
</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into stickers. This project was very famous among my school mates. I sold those stickers for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I combined it with other materials like minerals, copper inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

I modded two more cases to water cooling. A [https://www.meisterkuehler.de/thema/airlags-wakue-umzug/ coolermaster Stacker tower case] and a [https://www.meisterkuehler.de/thema/airlags-notnagel/ noname case]

User:Airlag

2019-02-07T00:19:58Z

Airlag: /* Projects from the 2000s */

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.
</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into stickers. This project was very famous among my school mates. I sold those stickers for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I combined it with other materials like minerals, copper inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.png|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]

User:Airlag

2019-02-07T00:18:42Z

Airlag: /* Projects from the 2000s */

<div>
== Airlag - this is me ==
[[File:airlag.jpg|right|400px|caption]]
I'm a Heidelberg native. I was born in 1964. Yes, i am '''old'''.
</div>

=== Projects from the 1980s ===
[[File:airlag_buttons.jpg|none|600px|caption]]
Turning bottle caps into stickers. This project was very famous among my school mates. I sold those stickers for 10 DM each. I made about 50 of them.

[[File:airlag_ball_of_wool.jpg|none|444px|caption]]
Pompon puppets - I made a few of these just for fun. Most of them turned out to be little monsters.

[[File:airlag_head.jpg|none|430px|caption]]
[[File:airlag beg.jpg|none|800px|caption]]
[[File:airlag_kira.jpg|none|437px|caption]]
I liked to draw, mostly B/W pencil drawings. Since I left school, my drawing skills dropped dramatically :(

=== Project from the late 1990s ===
[[File:airlag_wands.jpg|none|337px|caption]]
My first serious atempt to work with wood. I combined it with other materials like minerals, copper inlays, leather straps.

=== Projects from the 2000s ===
[[File:airlag_cube1.jpg|none|764px|caption]]
[[File:airlag_cube2.jpg|none|764px|caption]]
From the scratch build of a PC case. Aluminum Cube, cooled with water. The whole making can be found at [https://www.meisterkuehler.de/thema/airlags-wuerfel-eigenbau-fertig/ Meisterkuehler.de]