"How the heck did that happen?" Injuries

OK so I make jewelery and there are a lot of sharp tools I use but a few memorable slips. Drilling a seat for a diamond and the bit walked into my finger. Didn't know how deep til I picked a piece of bone from the bit. I also use a sawblade about the thickness of a hair. One broke on the downstroke and yep right thru the web of my thumb. Pushed it thru cause I wasn't pulling it. BTW crazy glue keeps me from bleeding on my customers stuff.