The cutting parameters for the brass was 3mm ball nose for the roughing cut feed 300mm min step over .73, 1 mm depth of cut 40min cutting time.
The finishing cut was with a tapered ball nose 1/32" dia 0.005" step over, 15 inches per min. the model thickness is 1.9mm finish cut 1 hr 49mins.
The brass was 3" dia and cut on a milling machine not my cnc router.
I know Mikey Leonard, I have made a few things that he has wanted for presentos and has scrounged from me.