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Are you using a sheet of paper under the 1um after you set the 1um edge?

That will polish 1/3 of the bevel, from the edge back and really smooth out the shaving edge. You can then just strop it...

Bevel set on the Norton, a 4k, will easily set a bevel, unless you are doing serious repair, (large Chip Removal) and even then you can do it, just take some time.

Remove the 4k stria with the...

So, first understand that all natural stones are made in nature, over thousands/millions of years with no quality control. As a result, all natural stones will perform differently, even of the same...