zlacker

>>surpri+(OP)
Oof, those welds are ugly. The author comments on the welding at the end of the article, but I'd venture a guess that if using a MIG setup the polarity may also be reversed and/or gas shielding may be wrong. On my machine the flux core wire vs solid core wire with shielding gas require opposite polarities...

source: I'm a terrible amateur welder

>>seemaz+FZ2
I haven't seen welds that bad since visiting India, where I ran across some so dire I was compelled to photograph them in case the building fell down later: https://imgur.com/a/16FRlEW

Love the spirit of the build, though, and it's a case where weld cleanliness doesn't really matter, so, more power to him.