The only thing more economical than building a tig out of a simple AC stick welder is to use a welder that doesn't need any gas, electrodes or filler. An electric resistance welder or a spot welder.
So I have started collecting micro wave oven transformers from the scrap yard.
Plan is to strip off the secondary windings and replace them with one wrap of heavy welding cable. Then keep doing that over and over paralleling more and more transformers until I get an insane amount of amps that I can use to spot weld thicker metal together.
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