If you have a small part made out of harden to steel rc 65-70 that needs to be lapped on a face, Id and od to a tolerance of .00002 how much oversize should the part be ground to? Yes millionths not tenths.

The part would be a OD.500 X ID .125 X Length .75

It would be inspected using light wave bands for flatness and air gages for the diameters. The lot sizes would be 10 pieces at a time.

Thank You

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