I discovered the hard way just how sharp my chisels are. Last Monday afternoon, I managed to push a 10mm (about 3/8") wide chisel all the way through my left thumb. I was trying to pare away a small square of plywood on the edge of a sheet when the chisel slipped off the edge and literally dived into my thumb. As I staggered away from the bench I knew I had cut myself badly, but I was absolutely shocked when I looked at my thumb and saw the chisel was sticking about 1/2" out the other side.
Six sutures and four injections later I was feeling pretty sorry for myself and rather stupid. As a heart patient, I take medication to keep my blood thin, so I am very cautious about cuts, knowing how well I bleed. At the moment, my workshop looks like a slaughter house !
Sorry no photos. They would make you sick, and I can't remove the dressings yet.