DIY Spot Welder

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Planning/Resource Collection
Born On:
09:09, 5 June 2012 (CDT)
Last Updated:
14:41, 11 June 2012 (CDT)


So I really like the simplicity of this. So I'm building one. I took apart a random microwave I found in the Electronics Storage Area and rescued its transformer. A bout with the cutoff tool and drill press (oh and a flat-head screwdriver and rubber mallet), and the transformer is freed of its secondary!


  1. Take apart Microwave. (Harvest all the fun parts)
  2. Cut/Drill out the Secondary coil.
  3. Acquire Low gauge wire for secondary. (Went with 6 guage)
  4. Hook it all up and try not to kill self.
  5. Plugged it up to this to lower its "Likelihood to Kill Phil ratio"
  6. Experimenting with Jig designs

Fun Pics

Transformer sans Secondary
Spot Welder
LED leads damaged by too many electricities