Thread: Arkansas Lapping Question

Originally Posted by tintin

somewhere we had a discussion on this and it was mentioned that granite inspection plates were made perfectly flat by rubbing 3 plates together in a certain order. it seems that using just 2 won't get them perfectly flat.

Yes, a specific three stone sequence is the only way to get them flat when you are rubbing two hones together for flattening.

To do the "grunt work" lapping old found Arkansas stones I use a 16 x 8 x 2 concrete block with water and plain ol' sand. Adding water and sand often. Still, it's a lot of work no way around it.

This is relatively effective for getting it close, then I usually use wet/dry sandpaper on a flat surface such as glass for the little bit of finishing up. Though I suspect there is a better method of finishing up than the wet/dry sandpaper, I made do with what I have.