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Whatever they use, it is TOUGH and holds on to the diamonds! All I could say.

I missed that, but it sounds about right. The tough diamonds which resist fracture will go.
Wreaking havok as they do? The ones which will fracture shall. Down to a level, I suppose, which gets...

Might be fracturing, indeed. Even though my worn plate is smooth as compared to a new one, it still seems to have an even coat of diamonds on it.

As I mentioned the screwdriver shaft, a diamond is...

I...uh... have several DMT 325 plates with different stages of 'wear'. The one the most worn is used strictly to lap my waterstones and has been for years. It got that way lapping hard, natural...