I stripped the sprocket threads of the rear hub of my first track bike, in 1964 (I was 13 and didn't know that you shouldn't install a British-threaded sprocket on a French-threaded hub). The mechanic in the local bike shop wrapped the hub in aluminum foil and threaded the same sprocket back on. Worked fine.

I've had that story in my holster for a long, long time, waiting for a thread like this to pop up.