I need to remove a section of 3" copper, and replace it. Has anyone ever done this with a single Mapp gas torch? I'm not sure if its going to have enough heat to get it done. I probably could get it out without too much of a fuss, I just want to have a bit more confidence I can sweat the new one back in without making a mess.
I'd think it could be done with a pair of Mapp torches, but its probably generally done with acetylene?