Originally Posted by
Cangooner
IMHO the depth that is removed during the lapping process is really irrelevant. What you are aiming for is flatness, not a particular thickness. Take a pencil, mark a grid on the hone. When that has been removed, repeat to make sure the pencil marks weren't just washed away. When the marks have been removed by the lapping plate/stone then you know that your hone is flat and true. Maybe that will take 1/8" off, maybe 1/64", maybe something else. But if you have it flat, don't keep lapping just for the sake of it. :)
Good luck
EDIT: note that Lynn said "about 1/8" off the 4k side" (emphasis mine)