My next door neighbour was laying under his car cutting the exhaust pipe off with a 9 inch angle grinder so he could replace the muffler. The disc jammed and pulled the grinder from his hands, the trigger was locked on and when it dislodged it hit the ground and flew at him and he had to keep fending it off until he gained control again. When he got home from the hospital he came in for a beer, his hands looked like he had been hand feeding tiger sharks.
Zane
That is an example of why lock triggers are now banned in industry. At a shut down on treasure island, a locked on 9 incher got away in an enclosed vessel and decimated the operator. and I mean decimated.
There is a REAL problem now with such weapons, these days anyone in the uneducated public can afford the full range them.
Ask any triage nurse how regular grinder injuries are.
I was partnered to a beautiful triage nurse with big tits for seven years.
other injuries she said that were more common than you would think are;
-eyes hanging out of their sockets because of a slipped "occa strap"
-bad toe injuries from lawn mowers(I guess, inappropriate foot ware)