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Why heat bolt and not around bolt?
(Don)
I am curious, is it best to heat the bolt head itself or around the
bolt? Will Heating the bolt heat make it more prone to snapping off?
It seems heating a bolt would make it expand, making it tighter?
By the way on all the other bolts I removed there was no rust.
I don't know the answer, but I think heating the "whole thing (mostly bolt) is
a good expedient to try--hoping that "after" cooling there is some loosening.
In a simpler situation, if you have a steel pin (no threads) stuck in a bore,
if you heat the piece in which the dowel is stuck it will cause the surrounding
metal to expand, so the bore gets bigger. So in this situation, heat the
piece, not the pin. And, pull the pin while you're still hot.
I don't think this applies directly to the stuck-bolt situation, though.
Frank Morrison
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