The way they used that induction heater doesn't make sense. When you use heat on a frozen bolt you are supposed to heat the metal that "surrounds" the threads of the bolt. The heat will expand the metal around the threads giving you some clearance to rotate the bolt. You're supposed to keep the bolt as cool as possible so that it "doesn't" expand giving you even more clearance. I'm a machinist and have had to deal with these types of problems many, many times, when anyone had a bolt frozen in a hole they brought it to me. Heating the head of the bolt (as in the video) is something I would never do??? It didn't look like the guy was trying to heat the engine head on the motor where the bolt screws into?? You get the bolt too hot and it will twist off because the hotter it gets the softer it becomes. Maybe I'm missing something. maybe I'm just getting old??
treblig
