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02-13-2009, 01:19 AM #25
In Shapton Glassstone terms, 3 micron is ≈5,000 grit. DMT calls it's 3 micron an 8,000 mesh. I believe the Japanese JIS scale calls 3 micron a 6,000: Grit, mesh, JIS, sheesh... This is a fine example of how useful a chart would/could be.
Last edited by Sticky; 02-13-2009 at 01:21 AM.