I agree with da Shiv.....considering that you are using relatively fine grits for your work, the coverstock erosion rate from your resurfacing should be fairly minimal. Now if you start dropping down into the 120 to 220 grit range, then the coverstock will start to erode away quicker, but dealing with only 800 and 1200 grit shouldn't present much of a wear problem.
The starting diameter of a bowling ball is some 8.595". Somewhere I recall reading that the minimum acceptable diameter is 8.500", so you can cut some 0.047" into the coverstock (doubling that measurement for an actual diameter) before the ball is at minimum specs.
Edited on 6/4/2003 0:51 AM