Project:Captive Ring Turning: Difference between revisions

From CoMakingSpace Wiki

(first gallery up)
 
(→‎tl;dr: cut at spindle height)
 
(9 intermediate revisions by the same user not shown)
Line 1: Line 1:
{{ProjectInfoBox
{{ProjectInfoBox
|project title=Captive Ring Baby Rattle
|project title=Captive Ring Baby Rattle
|image=
|image=captive rings 16.jpg
|status=done, now adding photos
|status=done
|date=March 2019
|date=March 2019
|initiator=[[Lukas]]
|initiator=[[Lukas]]
|team=
|materials=[[wood]] (apple log, [[Project:Drying Timber|self-dried]]), [[beeswax]]
|materials=[[wood]] (apple log, [[Project:Drying Timber|self-dried]]), [[beeswax]]
|tools=[[Woodturning Tools|woodturning tools]]:
|tools=[[Wood Lathe|wood lathe]],<br>[[Woodturning Tools|woodturning tools]]:
* [[Roughing Gouge|roughing gouge]]
* [[Roughing Gouge|roughing gouge]]
* [[Skew Chisel|skew chisel]]
* [[Skew Chisel|skew chisel]]
* [[Spindle Gouge|spindle gouge]]
* [[Spindle Gouge|spindle gouge]]
* [[Hook Tool|hook tool]]
* [[Hook Tool|hook tool]]
|software=
|cost=next to nothing
|cost=next to nothing
}}
}}
Turning "captive rings" is a tricky technique, but tried by many woodturners at some point.
Turning "captive rings" is a tricky technique, but tried by many [[Woodturning|woodturners]] at some point.


I taught myself how to do it in order to make a one-piece rattle for some awesome babies!
I taught myself how to do it in order to make a one-piece rattle for some awesome babies!
== tl;dr ==
* hard wood
* patience
* shape & sand as much as you can before "freeing" the ring
* cut the ring at spindle height or it may break at the last moment<sup> [http://www.holzwerken.net/Wissen/Tipps-Tricks/Drechseln/Gefangene-Ringe-Erfolg-nur-auf-Spindelhoehe]</sup>
* expect some burn marks


== Choosing the Material ==
== Choosing the Material ==
You'll need especially even-grained and dense wood for this project or the rings are prone to breaking.
You'll need especially even-grained and dense wood for this project or the rings are prone to breaking.


I was very happy with the '''apple''' log I had laid aside for this project all along, but the birch I used as a first test behaved pretty bad.
I was very happy with the '''apple''' log I had laid aside for this project all along, but the birch and especially fir that I used as first tests behaved pretty badly.


<br clear=right>
<br clear=right>
== Making the Hook Tool ==
== Making the Hook Tool ==
First of all, I made the special tool needed to undercut the rings. There are commercial "ring" or "hook" tools available but I had [[YouTube Makers|seen]] DIY versions made from [[Hex Keys|hex keys]] and obviously just had to try that!
First of all, I made the special tool needed to undercut the rings. There are commercial "ring" or "hook" tools available but I had [[YouTube Makers|seen]] DIY versions made from [[Hex Keys|hex keys]] and obviously just had to try that!
Line 44: Line 50:
</gallery>
</gallery>


''more coming soon!''
== Educative Failures ==
<gallery mode=packed widths=200 caption="first attempt: scrap fir wood">
File:captive rings - test01.JPG
File:captive rings - test02.JPG
File:captive rings - test03.JPG
</gallery>
<center>'''lessons learned:''' wood too soft, piece too thin</center>
 
 
<gallery mode=packed widths=200 caption="next try: birch (poor quality)">
File:captive rings - test04.JPG
File:captive rings - test05.JPG
File:captive rings - test06.JPG
File:captive rings - test07.JPG
File:captive rings - test08.JPG
File:captive rings - test09.JPG
File:captive rings - test10.JPG
File:captive rings - test11.JPG
File:captive rings - test12.JPG
File:captive rings - test13.JPG
</gallery>
<center>'''lessons learned:''' wood still a bit too soft, [[Parting Tool|parting tool]] much more suitable to define the ring width than [[Spindle Gouge|spindle gouge]], poor bevel on the hook tool, use even less force than usual</center>
 
 
The second birch ring turned out a lot better than the first so I decided to get serious!
 
== Baby Rattle ==
<gallery mode=packed widths=200 caption="the final piece :-)">
File:captive rings 01.JPG|the apple log [[Project:Drying Timber|was dried]] quite nicely and only had two superficial cracks
File:Center finder on log.JPG|tried to find the center as closely as possible to the log would rotate nicely and not lose too much material
File:captive rings 03.JPG|first step in pretty much any [[woodturning]] project: roughing
File:captive rings 04.JPG|sketching the dimensions of the first elements: end knob, gap, ring (1/2 gap width), gap
File:captive rings 05.JPG|after defining its outer curve with a [[Parting Tool|parting tool]] and then a [[Spindle Gouge|spindle gouge]], the future ring is slowly undercut with the [[Hook Tool|hook tool]]
File:captive rings 06.JPG|burn marks are to be expected when using a [[Self-Made Tools|self-made tool]] for this job - just make sure you don't generate enough heat to crack the wood!
File:captive rings 07.JPG|fast forward: two rings are cut! See "[[#Educative Failures|educative failures]]" above for more details on this part of the project
File:captive rings 08.JPG|this part was a bit scary (not tested beforehand): "planing" the middle section with the [[Skew Chisel|skew chisel]] while the rings are taped to the side
File:captive rings 09.JPG|give the end knobs some shape until you're happy (don't take too much off the diameter!)
File:captive rings 10.JPG|[[sanding]] the rings' insides is possible by taping some [[sandpaper]] to the spinning middle section and holding the rings
File:captive rings 11.JPG|applying [[beeswax]] is easy with the lathe spinning - most of it melts just by friction!
File:captive rings 12.JPG|even out the beeswax and work it in deeper with a paper towel
File:captive rings 13.JPG|waxing the rings is not possible with the friction method as they would just stop spinning - use a [[Hot Air Gun|hot air gun]] instead
File:captive rings 14.JPG|after parting the piece off on the lathe, I sanded the ends by hand (although a [[Disc Sander|disc sander]] would have been much better)
File:captive rings 15.JPG|one more waxing step with hot air...
File:captive rings 16.jpg|done!
</gallery>




[[Category:Methods]]
[[Category:Self-Made Tools]]
[[Category:Self-Made Tools]]
[[Category:Toys & Games]]
[[Category:Toys & Games]]
[[Category:Woodturning]]
[[Category:Woodturning]]

Latest revision as of 07:19, 17 July 2019

ProjectInfoBox

Captive Ring Baby Rattle

Captive rings 16.jpg
Status: done
Release Date: March 2019
Initiator: Lukas
Materials Used: wood (apple log, self-dried), beeswax
Tools Used: wood lathe,
woodturning tools:
Approx. Cost: next to nothing


Turning "captive rings" is a tricky technique, but tried by many woodturners at some point.

I taught myself how to do it in order to make a one-piece rattle for some awesome babies!

tl;dr

  • hard wood
  • patience
  • shape & sand as much as you can before "freeing" the ring
  • cut the ring at spindle height or it may break at the last moment [1]
  • expect some burn marks

Choosing the Material

You'll need especially even-grained and dense wood for this project or the rings are prone to breaking.

I was very happy with the apple log I had laid aside for this project all along, but the birch and especially fir that I used as first tests behaved pretty badly.


Making the Hook Tool

First of all, I made the special tool needed to undercut the rings. There are commercial "ring" or "hook" tools available but I had seen DIY versions made from hex keys and obviously just had to try that!

Materials:

Educative Failures

lessons learned: wood too soft, piece too thin


lessons learned: wood still a bit too soft, parting tool much more suitable to define the ring width than spindle gouge, poor bevel on the hook tool, use even less force than usual


The second birch ring turned out a lot better than the first so I decided to get serious!

Baby Rattle