I'm in the process of fabricating a new hand for a Marlin 1873 tip up revolver. The material I chose was a bit from a lathe and is made of high speed Steel. It was the correct thickness.
Shaping it isn't a problem. I realize there's going to be a lot of trial and error to make it work, but the shape is fairly simple. The problem I'm having is drilling a 5/64th inch hole in the high-speed Steel. I have wasted two Cobalt drill bits and when I was done doing that the dimple I created using the center punch appears unchanged. My drill press is not very good, but should do for a straight simple hole like this. I have it set as low of a speed as possible. I'm pretty sure that is 700 RPM. I am using Cobalt drill bits and I am providing a continuous flow of oil over the bit and the piece being drilled.
I'm open for any suggestions on how to drill a simple hole.
I'm open for any suggestions on how to drill a simple hole.