Just found GWizard.

It's telling me, for a 12mm 4 flute endmill in cast ali, 4148rpm and 427 mm/min for HSS.

For Carbide 6222rpm and 525 mm/min.

That seems very consvative.

If I set the surface finish from 1% to 30% the feed rate doubles.


If the tool size drops to 4mm then the RPM goes up to 18666!