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The chasers are sharpened by grinding the face on an ordinary grindstone or emery wheel.

It is poor economy to use slow-cutting grindstones to accomplish work that fast cutting emery wheels are suited for.

Free use of diamond powder and emery wheel dust are more often responsible.

If necessary the bases may be ground on an emery wheel until the pot stands true.

Where the scratches are not deep they may be ground out with a high speed emery wheel or lapped out if that type of machine is not available.