Making an ARC Welder
Did you know you can make an AC arc welder using parts from your microwave?
I used 2 transformers from 2 different microwaves, and about 50′ of 8 AWG stranded copper cable from a local hardware store. You could probably save some money by scavenging for free wire, but I decided to look at the “end of coil” section at the hardware store, and was able to negotiate a deal for half price on the cable, so the 50′ only cost me about $17.