Reply To: Sharpening for luthiers
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After I wrote, I did find a site that compared grits across sharpening media.
https://www.sharpeningsupplies.com/Sharpening-Stone-Grit-Chart-W21.aspx
That black Arkansas I talked about is rated by them at 4-8 micron range.
That’s the same range they put my 4K grit DMT stone in. I will say, the Little I’ve used the black stone, it doesn’t cut as fast.
maybe that’s why I couldn’t really say much about it.
They rate my 8K eefine DMT Diamond stone at 2-4 micron. Not what I expected when I picked up the black stone…live and learn.
And they rate most diamond and other powders and the Green Chromium oxide honing compound at 0-2 micron, Which jibes with my comment that I didn’t see much difference between 4K with honing and 8K.
Chris Schwarz has a several part segment on sharpening he did recently. His views seem to have evolved with the rest of us.
It’s worth a read and called “sharpen this” done in his usual style.
https://blog.lostartpress.com/category/sharpen-this/
You may find it rot or worthwhile, but it will get you thinking about what sharp is beyond a few hundred grit.
I wonder what size diamond powder they sharpened to in the Antonio Stradivari attellier? One luthier has his tools from a Cremona Museum on his site:
http://www.kevinleeluthier.com/stradivari_tools/StradivariusTools.htm
Four finger planes and a pile of scrapers, which are burnished, for the most part