OK guys I need some help with the bolt I'm machining. My first set-up was the bolt in the BXA tool holder with my new boring head, (cheap import), in a 3 jaw chuck. The set-up wasn't rigid enough and the bolt head was bouncing around. So I decided to go with v-blocks in a Bridgeport vise on the Bridgeport. The instructions with the Badger knob give this as one way to do it.
The knob was still bouncing. One question I have is about the carbide tooling that came with the head. I don't use carbide very much and that might be part of the problem. The bolt is a new FN Winchester model 70 copy. It seems pretty hard and just dulls HSS. When I make a cut, sparks are coming off with the chips sometimes and the bolt is squealing. It's not a good cut at all. I know carbide likes to run fast but if I go too fast the bouncing is worse and common sense tells me to stop. I'm guessing I'm running about 500 rpm.
Any ideas on what I'm doing wrong?
Are those bolts known as being extra hard? I've thought of annealing the knob but of course that will harm the blueing a little. Thanks for any thoughts.