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| Test zu umschreiben der Arc welding introduction
| | Want to tell other Makers about something you learned? To hold a seminar, talk to one of the [[manager]]s. |
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| | We have also collected some [[Seminar Ideas|seminar ideas]] already! |
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| //////////////////////////////////////////////////////////////////////////
| | If you want to learn how to use a [[Power Tool|power tool]] or [[machine]], please talk to a [[tutor]] and you will quickly get an [[introduction]]. |
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| | == Past Seminars == |
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| == Safety ==
| | Here is an overview of what happened so far. Below the list you can find pages of past seminars with slides that may help you to get started - but of course attending in person is always more effective (if possible). |
| [[PPE|Personal protection]]: [[File:Protection - welding mask.svg|50px]] [[File:Protection - gloves.svg|50px]] [[File:protection - protective clothing.svg|50px]]
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| :Make sure you cover yourself completely, there should be no exposed skin at all!
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| :*[[Welding Jacket|welding jacket]]
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| :* [[Welding Gloves|welding gloves]] over the jacket
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| :* ideally also a fireproof apron against molten metal drops and as additional radiation protection
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| :* robust shoes against glowing hot beads: sandals or sports shoes with mesh top do not provide sufficient cover
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| :'''Protect your eyes''' with a '''properly adjusted''' [[Welding Helmet|welding helmet]] during welding, and at least [[goggles]] when inspecting the weld or [[Slag Hammer|hammering]] & brushing off slag (it may be easiest to just wear goggles under the helmet so you can't forget them!)
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| {| class="wikitable" | | {| class="wikitable" |
| | !|Month |
| | !|Topic |
| | |- |
| | | 12/2017 |
| | | Introduction to 3D printing, featuring [[Project:Cookie_Cutters|Cookie Cutters]] |
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| | | 01/2018 |
| | | [[Fusion 360 Seminar|Introduction to Fusion 360]] |
| | |- |
| | | 03/2018 |
| | | [[Arduino Seminar|Introduction to Arduino]] |
| | |- |
| | | 03/2018 |
| | | [[Fusion 360 Seminar|Introduction to Fusion 360]] (focus on technical part design) |
| | |- |
| | | 05/2018 |
| | | [[ESP8266 Seminar]] |
| | |- |
| | | 06/2018 |
| | | [[Microcontroller Hacking Night]] |
| | |- |
| | | 07/2018 |
| | | [[Fusion 360 Seminar|Introduction to Fusion 360]] |
| | |- |
| | | 08/2018 |
| | | [[Fusion 360 Seminar|Introduction to Fusion 360]] |
| |- | | |- |
| ! Dangers !! Precautions
| | | 01/2019 |
| | | Fusion 360 |
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| | [[File:danger - optical radiation.svg|50px]] CRITICAL HAZARD - extremely bright arc | | | 02/2019 |
| * light damages eyes, risks include permanent blindness if used without appropriate protection
| | | [[PlatformIO Seminar]] |
| * UV radiation burns exposed skin
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| * wear proper [[PPE|personal protection]] (see above)
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| * immediately stop if '''anything''' seems to be wrong with the welding helmet
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| |- | | |- |
| | [[File:danger - heat.svg|50px]] extreme heat | | | 02/2019 |
| * splattering molten metal
| | | Arduino (Bobby Car parking sensor) |
| * sharp & hot slag pieces
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| *workpiece heats up a lot
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| *electrodes and other equipment also heat up
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| || | |
| * make sure there are no gaps in your [[PPE|personal protection]], e.g. between pants and shoes or jacket and gloves
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| * wear only cotton clothing - synthetics could melt to your body
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| * do NOT touch hot stuff, even welding gloves just tolerate so much heat (don't ruin them) so use pliers to manipulate your workpieces if you have to
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| |- | | |- |
| |fire hazard | | | 03/2019 |
| | | | [[MediaWiki Seminar#MediaWiki Basics|MediaWiki Basics]] |
| * Sparks can ignite combustible material
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| * workpiece can reach auto ignition temperature of its coating or residues
| | | 05/2019 |
| * electrode is hot after welding and might ignite stuff
| | | [[Fusion 360 Seminar|Introduction to Fusion 360]] |
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| * remove all easily combustible materials from your work area
| | | 06/2019 |
| * make sure your workpiece is clean
| | | [[KiCad Seminar]] |
| * turn off the transformer and be mindful where you lay down your electrode
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| * know where the nearest [[Fire Extinguisher|fire extinguisher]] is located
| | | 10/2019 |
| | | ''[[Einstieg in das Langholzdrechseln]]'' |
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| | | 07/2020 |
| | | ''Künstliche Intelligenz in der Medizin'' |
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| | | 10/2020 |
| | | ''Upcycling: Palettenholz aufbereiten'' |
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| | | 11+12/2020 |
| | | [[Linoprint with Laser Engraving]] |
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| | | 08/2021 |
| | | [[Urban Gardening]] |
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| | | 08/2021 |
| | | [[Linoprint with Laser Engraving]] |
| | |- |
| | | 10/2023 |
| | | ''Sprechende Pflanze programmieren'' |
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| | toxic fumes (e.g. ozone, flux components, nitrous gases, heavy metal particles) | | | 4/2024 |
| * galvanized steel ''(verzinkter Stahl)'' releases zinc oxide when welded which can give you "metal fume fever"<sup> [https://www.metalsupermarkets.com/welding-galvanized-steel/]</sup>
| | | [[Autodesk Fusion Seminar|Introduction to Autodesk Fusion]] |
| * stainless steel releases hexavalent chromium (carcinogenic)
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| * other coatings may also release all sorts of unknown compounds when vaporized
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| * [[grind]] away '''any''' surface coatings (e.g. galvanization, paint) before welding, they could generate harmful fumes or at least obstruct your weld
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| * take care of good ventilation - Use BOTH exhausts of the [[Welding Area|welding enclosure]]; but even that might not be enough for long sessions or difficult materials! Also, you should obviously avoid breathing in the fumes.
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| * "If the air in your breathing zone is not clear, or if breathing is uncomfortable, check to be sure the ventilation equipment is working and report concerns to a supervisor" <sup> [https://www.lincolnelectric.com/en-us/support/welding-solutions/Pages/Five-potential-welding-safety-hazards.aspx]</sup>
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| *stop immediately if you are experiencing nausea and report the incident to a supervisor
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| |- | | |- |
| | [[File:danger - high voltage.svg|50px]] exposed electricity (up to 60 V DC, 100+ A) | | | 7/2024 |
| * still below ''zulässige Berührungsspannung'' - minor risk of shock
| | | [[Einführung ins Slicen für den 3D-Druck]] |
| * equipment may overheat
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| || reduce the chances of electric accidents:<sup> [https://www.bghm.de/fileadmin/user_upload/Arbeitsschuetzer/Gesetze_Vorschriften/Informationen/209_010.pdf]</sup>
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| * make sure you are isolated (proper dry gloves, shoes and/or floor mat) from the workpiece, especially do not touch the electrode and the workpiece simultaneously
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| * unplug the welding transformer when not in use
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| * do not use two welding transformers on the same workpiece
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| * remove the welding electrode before putting the holder down (NEVER on your workpiece or anything connected to the transformer!)
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| * if you use a cable drum, make sure to unwind it completely - a wound cable drum will induce current and heat up the cables, which may lead to a molten cable coat with high risk of a exposed mains wire
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| * in case of electric shock, always make sure to visit a doctor!
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| | in some cases the electrode may get stuck on the workpiece upon striking an ark - if you can't remove it from the workpiece quickly, turn off/disconnect the transformer and '''then''' remove the electrode || use the correct setting on the transformer or switch to a new electrode | | | 8/2024 |
| | | [[Autodesk Fusion Seminar|Einstieg in Autodesk Fusion]] |
| |} | | |} |
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| == Suggested Reading ==
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| Besides these safety notes, you should read our page about [[Welding Electrodes|welding electrodes]].
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| These websites may also be interesting:
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| * ''[https://www.bghm.de/arbeitsschuetzer/fachinformationen/schweissen-und-verwandte-verfahren/ BGHM: Schweißen und verwandte Verfahren (DE)]'' - detailed safety information
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| * ''[https://www.bghm.de/arbeitsschuetzer/praxishilfen/arbeitsschutz-kompakt/033-lichtbogenhandschweissen/ BGHM: Arbeitsschutz kompakt - Lichtbogenhandschweißen (DE)]'' - nice short safety overview, "checklist" style
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| * [https://www.lincolnelectric.com/en-us/support/welding-solutions/Pages/Five-potential-welding-safety-hazards.aspx five potentioal welding safety hazards]
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| == Demonstration ==
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| The tutor will show you these steps in detail:
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| * check [[Welding Helmets|welding helmet]] settings
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| * set up your work in the welding enclosure
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| ** what way to enter best
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| ** close gaps, e.g. with spring clamps (long-term solution needed!)
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| ** bring a light with you, if necessary
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| * turn on the BOTH exhaust systems
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| **The trunk only ramps up to high if you temporarily obstruct the airflow
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| *try striking an arc and depositing metal on a scrap piece (e.g. in the shape of your initials)
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| ** it's good to experience the often scary sensation of your first arc ignition with your tutor ;-)
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| ** once there is a steady arc, push forward and make little circles in the weld pool to "mix" the workpiece(s) with the deposited material
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