Originally Posted by technobot
Please help me, the other day I has tightening my bikes crank bolt and the bolt snapped in half.
How do I get the bolt out.
The good news is that the remainder of the bolt is probably neither corroded in place nor under load.
Get a pointy tool (something like a center punch) and a hammer. With these you may be able to "walk" the bolt out by spinning it counterclockwise. Hold the point of the tool offcenter against the bolt, hold the tool at an angle, and tap it with the hammer such that some of the hammer blow turns into a CCW rotation force on the bolt.