The welder has been used several times and my only complaint is that the wire feed motor is weak and does not feed at a constant speed so it jumps a lot and then it eats normally and reverses back to the waves. I've used it on the 220 and 110 and it welds the same, I haven't used it for TIG yet and I'll be upgrading more than I would have given it 5 stars if the wire feed was up to snuff.