The Official "How Not To" Thread

I posted this a while back, but it bears repeating...Never ever use a tool rated for low RPM in a HIGH RPM grinder.


I am in an intense cleaning phase of the Dart. Yesterday, I was using a 3" cup brush in my die grinder to scrub the rust and stuck-on carpet hairs from the floor pans and firewall. Due to the amount of dust created, I wore my full-face respirator mask. Apparently, I had not tightened the chuck properly. The brush came out, smacked my face mask, and kept on going.
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Looking at the location of that gash on the mask, I can imagine that I would be minus a bunch of teeth (at least) if I hadn't had the full face mask on. I still have not found the brush; I think it went into orbit.
Please, please, please wear your PPE!!!