Quote Originally Posted by HNSB View Post
I've been told that you should never lap a stone with anything that has a grit finer than the stone being lapped. The smaller grit can clog the coarser grit stone. I don't know if you're lapping a 1k or less, but if so, definitely get rid of the 1500 grit sandpaper.

Also, like the others, I only lap or de-swarf stones with a single lapping stone which is a pretty coarse grit. (low 300's IIRC)
Withe the 1k, I stop at 600. hey, if I dont' have to go past 400, great news for me

Goog