Gas welding to my understanding is the best way for thin metal... Less brittle. Migs are most brittle and tigs are better. it's a art. I like tig for the most part as I never learned gas welding and works well on 1/8 up. slow
Not that we do lead that much since bondo. But its always cool to watch Bill.
https://www.youtube.com/watch?v=6OA0Ox2RhoY
If you guys are welding gas, make a vid for them young ones.