Micro-Abrasive Sheets: Micron to Grit Conversion
I never purchased from Keith but I've read that HandAmerican sold micro-abrasives that reached very high grits. If the places below are correct that .5 micron micro-abrasives are really #9,000-#12,000 grit, then what was Keith selling? Perhaps Keith sold a completely different product but a lot of people use the sheets from the retailers below as a comparable substitute. :shrug: Can anyone tell me definitively what the grit sizes are for these sheets? Also, if Keith did at one time sell higher grits, where can I get those micro-abrasives now? Thanks.
From Lee Valley Tools:
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The 15 micron (approx. 1000x) removes steel quite quickly; the 5 micron (approx. 2500x) refines the edge to usable keenness; and the 0.5 micron (approx. 9000x) gives it a mirror finish.
From Tools for Working Wood:
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In general, a good sequence of sharpening is 15 micron (similar to a 1200 grit waterstone), followed by 5 (similar to a 5000 grit waterstone), followed by either the 1 and/or the .3 Micron Aluminum Oxide (similar to an 6000 or 12000 grit waterstone respectively).