Wow. Finally used it last night. Where have you been all my life. There'd been a rounded corner on the firewall of my sonoma project truck that had been kicking my *** trying to replicate with 18ga sheet steel and a hammer and shotbag. My last attempt had taken an hour of work, and I was decidedly unhappy with it still, not to mention half deaf. With the shrinker jaws in, I made the piece to my satisfaction in 4 minutes.