On sheet metal! That is what the demo guy said. It runs pretty cool, relatively speaking, for a welder.
Not me. I find it hard to believe you can do a continuos weld on sheet metal without warping. That I would have to see in person.
In the demo he started with a gap between the pieces of metal by the time he got to the other end he didn't need filler because there was no longer a gap. And that was a 3 inch piece. On a longer weld I think there would be quite a bit of warpage.