Knife Sharpening

[Mortblanc]

LAC we use a different rating scale over here for abrasive grades. We have no way to convert the grades to answer your question.

The U.S. scale lists 1000 grit as 4 microns texture. 2000 grit is 3 microns or there about. We would use that to polish the lacquer finish on an auto paint job or polish that dull sheen off your plastic headlight covers.

3000-6000 grit we would use to polish the Hubble space telescope mirror. It would have the texture of talcum powder floating in olive oil.

In turn, the "coarse" belt on my bench sander is 80 grit, medium would be 120 grit and fine would be 180-200. When I polish metal I use a crocus cloth that is 660-800 grit for final polishing.

My diamond bench block has 4 sides, 200/300/400/600 grits and when finished with that process all it requires is a leather stop to finish the razor edge.

It appears that your system might add an extra zero to the rating numbers we use, but I can find no information on that in a google search.