Thread: DMT lapping stone convex???

thanks! i will try

I have a DMT 220/325 (8x3) and one side is definitely NOT flat. If I lap a stone on the 220 side until the pencil grid is erased, it seems flat. But if I then do the same on the 325 side, the pencil grid is only erased in the middle of the stone, and it takes considerable more lapping to erase the rest of the pencil grid, depending on the hardness of the stone. I finish lapping with, and hone off of, the 325 side, and have no problem, so I suppose it's the 220 side that is not flat. (Is "unflat" a word?) However, it could be that the difference in unflatness (seriously, "unflatness?") is visually striking but so very minor that it wouldn't matter in the honing process. I don't know.

I do know that DMT will replace a stone, but it takes two months. I did it once for a 325/1200 combo that was losing its diamonds, and it was a no-hassle experience. Send it back, they test it, and send you a new one. No questions. They even included a few extra (slightly used) goodies, like a 325 DMT credit card for making slurries. Good company.

Anyway, good luck with your stone. =)

Me

thanks for the info. when i use my 8k side i can see that all the water is pushed away right to the stone in like the center inch so maybe same type of scenario where the middle of the dmt is a dish