Using an endmill sharpener
I use 1/16" rim for air bearing work). You can play with clearances via raising or lowering the rest to acheive a baseline. As a general rule I shoot for 8 deg clearance on the primary and 17-18 deg on the secondary on most cutters. On end mills 1/2" or smaller, I increase the secondary to at least 25 deg, this is all on the graduated ring.
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