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Some purport to substituting honing with diamond paste. It would seem this "vendor" is of that persuasion.
While I do not subscribe to this, I would say, in general, if diamond paste is to be...

I dunno about 3 micron Diamond paste. Pretty rough stuff. Even 1.0 is not really best for refreshing. Good you got results, but I feel 0.5 or .25 would be better suited to refreshening a shaver. Just...