I broke a good old vise I had inherited from my Dad, in the place when I was a very young hot rodder. But I was trying to press in a stubborn u-joint, if I recall correctly. And my vise just made a little popping sound, leaving me to think that the u-joint was finally coming together nicely...until the moving jaw hit the floor! That was depressing. I had just lost my dad to a tragic car accident, and his tools were important keepsakes for me. I still regret that.