Hey guyz

I have a DMT 325 primarily to keep my norton stones lapped. However, I have acquired a totally unknown stone - maybe jnat - maybe slate - nobody can say.

It needs a little more lapping to get a modest dish out of the centre.

All I have is the DMT to do this job, and I can't afford another cuz this 'save some money' shaving hobby is costing more than maintaining my automobile.

Can I lap this stone comfortably on the DMT without knocking off the diamonds?? Is it risky or.....?? I realize this is speculation, but assume it is a high end high grit stone.

thnx