Thank you for all the quick and detailed responses. The item that was being drilled was a hardened steel gear from a socket wrench. We did end up getting the 1/8" hole through with a general purpose carbide bit and a masonry drill. Took a total of about 4 hours.
Hello,
I have a question about work hardening. I was in a discussion with a friend of mine about work hardening. We were trying to drill a hole through a piece of HARDENED steel and my friend told me to drill slow to prevent work hardening. My thought is the steel is already hardened, and...
