Join Date: Jul 2002
Location: Oxford, UK or Mountain View, Ca
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Well it's too late now if there was a problem. Never force threads. Never!
Any threaded component on a bike should start and then thread most of the way in by hand, with gentle turning in the fingers. Greater torque is only required for the final tightening. If not there is an incompatibility between the threads or one, other or both has sustained damage, corrosion etc and requires professional attention.
In particular to pedals, and some BB components, one must to be careful to note that some parts are left hand threaded - left sided pedals are usually left threaded, right hand pedals right threaded. A mix-up here would cause severe damage. If in doubt check - it is possible to observe the direction of threads by eye. I can only guess what damage you might have done, most likely to your cranks but it would be worth getting a second opinion. It might be possible to install a helicoil thread insert into the crank.
Get a bicycle. You will certainly not regret it, if you live.