aka: Dr. Cannondale
Join Date: Jul 2009
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Yep, the advice you already got is the best: screw the bolt in a few turns so the head is poking out, then tap sharply with a metal hammer. If you can get someone to hold the fork for you, place a small socket atop the bolt head to avoid damaging it with the hammer. Works like a charm, or at least has on every stuck quill I've ever had to deal with.
Hard at work in the Secret Underground Laboratory...