Dimples, dings, and dents in Header tubes. Any good tricks

I put an appropriate sized socket on an extension, heated the pipe and beat on the socket to make a bit more uniform indent in the pipe rather than just hammering the tube with the hammer. I was clearanceing for the torsion bars.:BangHead:

Did you use the smoke wrench for the heat or did you get away with a handheld and some mapp gas? The hammer and bash theory doesn't excite me either.....

JW