I saw a super simple arc welder in Mexico, even took a picture of it but can't locate it. Five gal. plastic bucket full of salt water with a lid on it. About 4 copper rods spaced out and sticking through the lid, threaded with nuts to hold them in place and as I remember each rod was a different length. He clamped his hot lead of 110 volts to the top of the longest longest copper rod.
Then he came off the top of one of the other rods with his positive [stinger] cable. The negative lead from the 110 volt shop service was attached to the ground clamp of the piece to be welded.
I guess the amps were adjusted by hooking to a rod of a different length.
Didn't look to safe to this Gringo, but this is what he welded with every day. Use at your own risk. Jim
