[gondorf]

Originally Posted by Andrew Blair

A dremel bit is a bit for a small tool that spins at extremely high RPM. Good for grinding, cutting, etc.
http://images.google.com/images?q=tb...20mototool.jpg

Now, when a small, hardened tool breaks for some reason, it still contains a lot of energy. When it breaks, it shatters, and pieces, with lots of rotational energy, fly outwards, kind of like a sharp explosion. Little bits of shrapnel. When you use a dremel, you often end up putting your face quite close to the work, so when a bit shatters, it sprays stuff all over your face, including you safety glasses. I'm sure they had lots of little cuts too, but in comparison to what could have been lost, its very minor.

hmmm dremel looks sort of like a recipricoal saw.

anyway that is a very cool mishap even better than the picture of a whole bunch of high school students looking at a burning motor and not knowing what to do.