Thanks! Ive messed up quite a few times so I figured out what didn’t work for me pretty fast.
That ring was super easy and simple. Using over rounding router bits can be tricky on aluminum but getting a perfect radius in one shot is worth it.
The bottom of the cutter is o.500, draw a square the exact size of your setup stock. Make a new straight 0.500 endmill in library, make cut outside toolpath. Set tool conservative on plunge, maybe 1, DOC 0.010 (will start cutting more and more as the radius edge comes down), total doc to top of cutter radius. Setup stock in vise with parallels, zero out, run with to the ear friendly rpm with wd40.
Adaptive I seem to be able to run about 50% higher than most but my s3 is modded. Basically im always around 65-75 ipm, 20-24000rpm, 0.05-0.03 opt load, 0.200-0.080 doc depending on tool size and type. That’s with high quality roughing endmills with chipbreakers, mostly dry with some chilled air blast superlight mist