doesn't look that dangerous, really. the (what i assume is) stepper bit wouldn't have to rotate very fast to be effective. it would just have to have, and clearly does have, high torque.

True, but one moment stupidly looking away and getting it started into your wrist, say goodbye to that entire arm. ;-)

What an ingenius idea! Still prefer an axe, though. I have Jason issues.

I'd have to see that bit in person to know for sure, but I'm guessing that scenario would be INCREDIBLY unlikely. The bit would have to hit bone immediately, in JUST the right way... I'd venture to say that would be nearly impossobile.

If it hit's flesh, you're yanking your hand out of there as hard and as fast as possible. Granted, you may leave some flesh behind, but it's not going to take your entire arm/hand.

But to help even further - put in a foot pedal that supplies power to the motor, making sure the moter is set up (however you can do this) to seize immediately when it loses power.

Hopefully no one will put a patent on this...?

I could see this featured in the next Final Destination movie, however in real life looks super useful, even portable.

I wonder if this is really an improvement over other methods. I bet that wood has to be really dry for it to work so easily; I can imagine something like a fresh elm log getting stuck on that bit and wrenching the motor right off its mounts.

SO MANY SPLINTERS!