well how old is old ? i am 47 i pick up my first gas welding set when i was 12 still have it before that i leaded with a propane torch . i had one of the sears torch setups that you burned a solid pug of some thing you put in a tube that you used along with propane that you could gas weld with . at work i did body tin and structure work were i welded many cars slice and dice s and had all the state paper work along with it. i hanged alot of tin and was still doing it for guys in town till i sold my wire welder . last thing i welded was a box side on a.2003 ford pickup so yep i know all about the thin stuff its getting thinnner