As I'm sure we all have done, I cut my finger with my razor knife. I didn't even notice it, until the next day. I don't even think it bled much for being a deep cut. And, the twist. I managed to sever the nerve in my right index finger. Have you ever tried to work with delicate parts, without any sensation in your finger? It took me the better part of an hour to glue three pieces together. I believe my days of etch are more or less over.