I always worry when working on my airplane and there is no human red sauce leaking out somewhere in the process. It means I probably missed something in construction and repair.

I actually have my own suture kit and have used it from time to time, much to the dismay of the wife.

I'm more of the "stand up into the aileron/engine mount/instrument panel" kind of guy than a "slice with tool" kind of person, though. I'm more likely to drop the bit of tubing I've just coped on the belt sander (but not quite dulled yet) onto my leg and make a slice than get a finger on the sander itself. Judging by the state of my very excellent steel toed leather boots I wear in the hangar, I'd be short several toes without them.

Don't even get me started on safety wire....