I had a project at work and thought, "I can do that!" It took me 2 bits, but I finally got the feeds & speeds down. I used an Oflute 1/8" @ 50IPM, 13k. My first bit went to going too fast on ramping. I slowed it down to 5ipm plunge rate and it went like butter. Very smooth and easy the second time. The pattern looks odd, but it is for an IR laser that will mount up to an IR thermal camera. I made it to be adjustable in elevation and windage so no shimming would be needed.

Rvss mounts.jpg