worst crash ever

Post your worst nightmare here.
Just want to see if any were as bad as my
big mistake.

Mine was running our large CNC lathe a few years back.
I pulled up an on screen calculator and did a
program adjustment. Unfortunatly, I missed the
decimal point and instead of movoing an extra .01
rapid traverse, it went an entire 1.00. Well I was
spinning a 12 inch diameter hunk of round aluminum
in a 15 inch chuck at 800 rpm. I hit the start button, and it ran the
turning tool full force into the workpiece. The
workpiece was knocked out of concentric, and the
face of the part wedged between the tool turrent and
the chuck. The resulting force sheared the 6 10 mm
cap screws holding the ball nut to the casting and sent
the tool carrige crashing into the tailstock.

I turned several different colors before settling on
off white.


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