I learned a couple valuable lessons last night. One, If youre in a hurry, dont be, the project will be there tomorrow. Two, the tools you take for granted CAN hurt you. Long story short, I was in a hurry to assemble something and needed to open up some holes from 5/16 to 3/8" . So I grabbed my trusty cordless drill and took to opening holes. I didnt get too far, about halfway through the first hole and yep, it grabbed, but instead of spinning the part, it threaded itself into the workpiece and feeding down through he part, right through where the palm of my hand was. It went into the my palm just between the ring and middle fingers, almost completely through my hand, but luckily it didnt get that deep. Now you may ask, why was my hand under it?. well, the pieces are wooden pulleys (decorative for a lighting project) not important, but it was the only way (expediant) to hold them. That was the "in a big hurry" problem, rather than figure out how to hold them, My hand sufficed, or so I thought. Luckily for me, there was no real damage to my hand , it grazed off important internals but my ring finger is numb and should regain feeling over time according the ER doctor. Three stitches and I was on my way home. Now i cant finish the project for 2 or more weeks, so much for being in a hurry.