Questions for those with extensive tool experience: Please bear with me.



Made the mistake of mixing high speed stones with ordinary ones. Does anyone know a sure way to identify which is which?

Also, I have a stone that is damaged/grooved from grinding on a very sharp/hard steel edge. Can it be reshaped (and then used safely) by grinding on a file? Can't easily find the perfect size & shapes for chamber work, so this would be helpful (if indeed feasible).

If die grinder speed can be limited to a safe level for non-HS stones, I'm a bit unclear on the advantages of then grinding at a higher speed (aside from time)?



Thanks in advance.

6 VOLTS/POS. GRD. NW INDIANA

I assume you mean arbor mounted HS stones. They can be dressed and shaped with a dressing stick, or stone. Usually 1x1x6,,,check industrial catalogs. Same thing is used to dress bench grinder wheels.

Files do not fare well in reshaping stones.  I use a diamond dresser which is essentially a small diamond in the end of a threaded stud.  These last almost indefinitely once set up in a fixture to hold them.

Lorena, Texas (South of Waco)