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CBN, will work with most conventional substrates, but like with Diamonds, the performance will vary. For razor finishing a softer substrate, will polish better, for comfort, in my opinion.

CBN and...

Ken Schwartz, Chef Knives to Go. Sharpening Accessories.

There are several old thread about Kremer Pigments complete with the stock numbers if you want the natural pigments.

I wonder about the "Grit" ratings of natural pigments, "pure" Chrome Oxide and Iron oxide finishes are different, from CBN synthetic finishes of about the same size, so I wonder about the .3 and .5...

Yup, a big difference between .5um/30k grit and .1um/160k grit.
few razors and faces can take it.

CBN is faster and more consistent than Chromium Oxide. Kremer Pigments has all the natural...

Yes, mix with oil, it will absorb into the balsa quickly. You don’t need much and don’t need to coat the whole slab of wood.

3-inch X’s the width of your finger, work well.

Make sure to wipe...