Is it truly a weld though, or simply a variation on soldering/brazing?
It is soldering of a sort, but if you watch all the videos, there's one where they do a "tee" joint with some pretty thick stock, and they put pressure on the top piece, and it bends rather than the joint breaking. Looks like it might make a pretty tough joint.
Posts: 2952 From: Moncton New Brunswick . Canada . Registered: Mar 2006