John, It depends on how the stone is dressed and how much I plan on grinding off. If it's a real rough dress .004-.005 at a time when using a steady rest. If i'm going for the finish grind it's much less, maybe .0005-.001 to get to size and keep the roundness within .0001

Last edited by Performance Only; 06/04/13 03:15 PM.
machine shop owner and engine builder