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@dmczone
Recently attempted to remove an alloy seatpost seized inside an old steel frame.
Tried all the usual methods but nothing worked, not even a budge, so I ran out of patience and pulled out the power tools.
Hacked off the top and found there was about six inches inside that had to be dealt with.
Was able to ream it so the walls of the post were no thicker than 2mm.
Thought it could just slide out now, with a bit of twisting or rolling it inside itself as Sheldon describes.
Still nothing. After nearly 30 years the frame and post were fused together.
Eventually got it out after a bit of chiselling - make that* a lot of chiselling*.
This method is effective, but not recommended, especially on a frame you care about. The potential for damage is quite high.
If only I knew about caustic soda.
Next time.
