I have had a few close calls. I was cutting a solid block of walnut on the table saw and I trimmed off a sharp little triangle from a corner. Like an idiot I was not using my zero clearance blade insert. I pulled the case away after a cut. The newly exposed grain pattern looked amazing! That triangle waste piece wobbled there on the table for a moment because I was focused on the case. Time froze as I watched the triangle creep toward the blade, get caught in the slot for the blade and WHACK it was sent hurtling passed my face.
I felt the wind as it whipped passed my head. I wear goggles and a dust mask but it was sharp enough that I’m sure it would have cut my face.
Then I took the same block over to my router table and I was not using the router table fence. I was trying to feed this curve into the bit and I tried to back the piece into the bit the wrong way (to avoid tear out) and the blade caught the case and sent it out into my driveway. Very scary and very damaging to the case. Anyway, that case is about a half inch smaller than it was supposed to be thanks to all my hasty mistakes.
Never hurts to be too cautious. At least with a table saw cut they can usually put the finger back on. A router will turn your hand into hamburger before you notice you made a mistake.
(Anyone else have some good ones, Ive got a few more)