My wife, during yesterday's panic, broke the key off in the lock of our new telescope garage. There isn't much if anything of the key in the lock to grab with pliers. My thought is that because the key is a bit less than 1/16" width, I might solve the problem by buying a 0-80 tap, a .0469" drill bit, and a 0-80 screw. I should be able to put just enough of a hole into the part of the key remaining in the lock to thread it, and then use the 0-80 screw to gently pull it from the lock. Any other suggestions?
UPDATE: My wife managed to (and I don't know how) get the doorknob out of the door without damaging anything. Now I can take the lock into a locksmith, instead of the locksmith charging me a fortune to come up here.