Scrap Microwave Spot Welder
by gianteye, published
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Ever see a microwave on the sidewalk waiting to be hauled off to the dump? Save that machine from the bin and make yourself a serious shop tool.
Spot welders are great for making sheet metal enclosures, building wire structures, attaching threaded fasteners permanently to metal forms, and tacking things together for more industrial welding later.
To construct this spot welder you'll need a junked microwave, 1/4" (nominal) Delrin, 1/8" (nominal) acrylic, some PLA printed brackets, and some hardware you can find on McMaster and Amazon.
- 1 12"x20" sheet Delrin
- 2 12"x20" sheet acrylic
- 4 Handle brackets
- 8 Vertex brackets
- 8 Corner brackets
- 38 10mm M5 BHCS
- 8 20mm M5 BHCS
- 6 25mm M5 BHCS
- 4 M5 Nuts
- 1 20mm M3 SHCS
- 1 M3 Nut
- 2 Copper lugs
- 1 7"x1/4" Copper rod
- 4 Rubber feet
- Spade connectors
- 12ga Wire
- 2ga Wire
These files are more for reference than a complete tutorial on making your own spot welder. If people are really into the design I'll revisit it with step-by-step instructions and diagrams. Yes, I know I'm mixing metric and imperial measurements, but this is because the products I'm naming end up being more searchable in certain units. If you're really that worried, type the measurement into Google for a conversion.
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Scrap Microwave Spot Welder by gianteye is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
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- You must attribute (give credit) to the creator of this Thing.
- You must distribute Remixes under the same license as the original.
- Remixing or Changing this Thing is allowed.
- Commercial use is not allowed.
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