Im using a thermal acr machine to weld some gas lines Its an old buzz box. 3 phase im running it at 220 it coulad do 480. I perfere it over Miller or lincon. The only bad thing is the dile is small, making it touchy to adjust. I love it. It took some time to get the acr flow adjusted too. I love this machine I heard most of them are digital the one I have it anolage. I'll find out the model on monday. Its light. Too

Josh