I used it with 110V welded 1/4 steel no problem very impressed with the heat. the mig worked as advertised except when welding thin metal like on the wheel well on my trailer and that was with the rosin core wire. I think if I used straight wire and gas it may be just fine. On the funny side of things when I unboxed it found everything except the ground and the cable for ark welding really upset me then I looked inside the welder there they were. got me good. anyway, so far I love it it is just what I wanted. After I get to try out some of the other functions I will write another review for each feature I use. Thank you and hope this helps anyone intrested.