[tjrider]

As far as big stuff, flux core is the best way. You could do oxy torch welding, but you would have to may so many passes it would get really hot. Oxy welding is fine for thinner metal. Old school car guys used to lead body panels with a torch. But I've never heard of welding with one unless you had too..... tig is a better option, you can tig pop cans together