WE blow dents out at our shop, but just for ourselves and a few sponserd riders. I just plug then one end, and have a plug for the other with and air chuck, and a valve, hook the air up 40psi or less, turn the valve on, make sure nothng is going to blow off and then heat, slowly, and it works great.....We race the GNCC's and the NHS, and blow our pipes out just about every other race, due to some sort of rock, or crash, or foot peg. Ive even had to weld a Gnarly pipe back up for Cole Calkins, when him and Doug Blackwell came together....He wanted that pipe for going to Wellsville, not like he needs it. But any way it is simple and ive never had a problem, besides one pipe blew out, and when they do this it is just a small pin hole. any way be carful and wear a grinding mask.