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TGR-
Ta! Something to piss around with while the weather is too hot to ride....
@airhead - oof! Have you the scars to prove it? I was doing a notched joint on some 18ga tube the other day. I had to use a no.5 tip to get into the corners - the sheer level of heat is crazy compared to the no.1 I use for the thin stuff....nearly set my hair on fire once or twice. I think a full face shield might be in the offing if I do much more of that.
@chak - cheers mate, it's not bad. The car is a 1963 Plymouth Fury, that is, to put it kindly, a LONG term project.
Jung
I'm getting handier with the torch too. You invariably end up with a couple of small gaps as the sections go together and the metal pulls this way and that. 20ga is only 0.9mm thick, so gaps are an anathema - it's easy to burn the edges away and blow a nasty hole. If you're deft, you can add a little filler, I use 30thou mig wire but that is bloody tricky as it burns like a fuse popping at the slightest whiff of heat. You can also wave the torch around laterally in front of the weld to squeeze the gap shut, if you do this and quickly give the weld pool a little flick, you see molten metal shooting up to fill the gap just in front of the main puddle. Very satisfying.
OK, weld nerd off.