Diamond Stones

John Wilson

Well-Known Member
that grid is the "stone". It's basically expanded metal with the diamond dust impregnated. The block is just a backer for stiffness and some clearance elevation from the table top to mimic a stone.

I have a very course diamond plate that I use to flatten my waterstones. It's nothing but a bumpy metal plate.

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Michael Minto

Well-Known Member
I've never owned a diamond stone.

Why do they have that metal grid over them? How can you sharpen with that grid?
Jammer, the "holes" or "grid" are really only an issue with small pointed tools like carving gouges and the like; they work fine for knives, in my experience. That said, I now use two standard/continuous diamond bench stones from DMT, 11.5" x 2.5" and find that a good size for sharpening knives. Given that they will outlast me, they are not overly expensive.


Well-Known Member
You guys are costing my money. I just ordered the DMT, 11.5" x 2.5" in fine and very fine grits from Amazon. I've been holding out but took advantage of the advise on this thread to upgrade my old diamond block.

John Wilson

Well-Known Member
You guys are bad influences. I couldn't sleep last night, so I jumped on here and what do I see? A thread that convinced me to go buy a diamond stone. I got the fine/extra fine combo to play around with. Should be here tomorrow.