Paul decided before he used his homebrew arc-welder (not yet built) he would practice with a factory built arc-welder. He borrowed his grandfather’s arc-welder and tried it out today. He needed a suitable piece of scrap metal which he found in the middle of the road while driving home.
Paul obtained his microwave ovens, wired the garage for 220 volts, and extracted the first transformer. In this segment he replaces the old secondary windings with new, thicker wire.
To power the arc welder Paul needs six transformers. At a cost of $5 for 33 microwaves, one transformer sets him back 15 cents. He dismantled his first microwave oven and extracted the transformer.