Quote Originally Posted by canuckblade View Post



Tried lapping my new 4k/8k on 400 grit wet/dry sandpaper and my bathroom granite countertop.

I got about 90 % flat and smooth (confirmed with pencil grid) on both sides after a fair bit of work, but for some reason some of the corners and very edges on both the 4k and 8k won't go flat no matter what I do.

I'm about to cave and just buy a DMT.
It took a while with the DMT but I found that with mine the corners on the 8k side did slope down a bit. You could just barely feel it when you ran a finger over the lapped portion of the hone onto one of the corners.

Horn