candle wax bolt extraction

[Faithful Old Road Dog]

I haven't tried it, but I've seen my machinist friend heat up a broken bolt with the oxy-acetylene. Then he touched it with a crayon. The heat sucked up the crayon around the threads. Then he took vice grips and wiggled it back and forth until it spun out. Worked like a charm. Most times he tig welds a few beads on the end of the broken bolt. Just enough for the vise grips to grab. Since the tig weld put just a bit of heat on the bolt, it spun off.

I've heated up stuck bolts with mapp gas. Then I'd drown it with PB blaster. I'd wiggle it back and forth and most times, it comes out.

[wbt]

A trick I have learned if you broke the bolt off, place a nut on top of the broken off bolt and weld the center of the nut to the broken bolt wait a few seconds for it to cool and take a cresent or vice grips and turn the broken bolt right out. Sometimes this works the first time or you might have to try it a few more times just keep a few extra nuts around so the heat keeps penetrating. Hope this trick helps someone out there. Todd

The few times I've tried this, it works very well.