Something that causes cursing:
having a pin punch jump and take a chunk out of your finger
Something else that causes cursing:
having that last blow bend the pin that was supposed to be driven into the hole.
On the plus side, I did manage to bend the pin back and get it driven into the gas block I was installing.
I know too well what you mean. Do you have a set of starter punches as well? Well worth having. Helps me keep my religion. 😀
I currently have a pin punch shaped hole in my finger, but luckily didnt bend the pin. So I feel your pain.