- Joined
- Jan 22, 2012
- Messages
- 655
I am making an adapter to engage the knee crank so I can use a drill motor to move the knee. I am setup to make the first series of cuts that form the cogs, 3/16" cutter .150" deep at 1100 RPM. The cutter is HSS and for this job. I am getting a lot of squealing even with very minimal pressure. I tried both a 4 flute and 2 flute end mill, same amount of noise but the 2 flute did seem to do better. I am using cutting oil, dabbed not flood. Does this seem to be about right for speeds and such? I haven't used small cutters like this before though I did make an aluminum proto and didn't experience any squealing. Any suggestions from the more experienced would be appreciated.