"3G" wrote in message ...
Has anyone ever have this happen?

today I went to change the table saw blade and when I unscrewed the nut
that holds on the blade, it was cracked in half.
I was thinking after I replaced the blade and installed a new nut what
would have happened if the nut broke in half while spinning.

I must say "in all the years of changing saw blades I have never seen or
heard of this happening".

Has anyone ever have this happen?

Something similar: Back in the 1950's we had a 33HP outboard motor with an
external flywheel. The crankshaft broke at the flywheel while the engine
was going full-bore. The flywheel landed in the boat and drilled several
holes in a wooden seat and floorboards.