The Stovebolt Site Forums The Shop Area Paint and Body Shop '59 Apache - Inner/outer cab corners, first time

I also use .023 mig wire when I'm welding sheetmetal. Spend the extra time on panel fitment, when you butt weld try to have tight gaps. If the metal is slightly touching that's great. Your gaps should not be wider then the welding wire.

If you want really nice metal finishing with minimal use of filler you need stretch that metal back to its original state. Don't wait to finish your bead to do it either its that much harder if you do that. You tack it in, grind your welds hit the haz(heat affected zone) with the hammer on dolly. The haz is the area where the metal changed colors from the heat. Then tack new areas grind your welds hit the haz with the hammer on dolly. You do this until its completely welded in. Now if you don't have access to the back you just tack and grind and keep the metal cool as you can.