Need stuck bolt direction...

[crag antler]

I go about it a couple of ways:

Grab a hacksaw/dremel, and either cut a slot for a big ol' flathead, or try to make a nice little hex head.

Either that, or I get out my craftsman version of these (the CM version has smaller sizes for bolts with the head broken off:


Hammer them onto the bolt and twist away.

Last resort, take a good socket that's slightly smaller than the bolt head, (or if broken off, smaller than the bolt body) and hammer it on hard, take your ratchet and wrench it free.

Failed for me.