Unknown Mine Japanese Natural Sharpening Stone 1lb. 8oz. (678g)
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Unknown Mine Japanese Natural Sharpening Stone 1lb. 8oz. (678g)

$175.00
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Unknown Mine Japanese Natural Sharpening Stone 1lb. 8oz. (678g) 186mmX74mmX22-24mm Please click here to see video It might be #4000 for lower range in the fine grit It is muddy stone. I do not know which mine it derived from. Hardness-------------7.8 It raises large amount of the stone color slurry quickly. It is smooth stone, but it is muddy stone, so it is sticky little bit. It does not need tomo nagura or the device to produce the slurry (worn Diamond lapping stone). (Scale; 1 to 10, 1-3 is very soft muddy rough grit whetstone 3-6 is soft medium grit whetstone, 6-8 is hard medium grit whetstone; 8-10 is fine grit whetstone) Particle Size----------8.2 . It makes my blue II steel kasumi blade knife; hagane became bright silver finish to semi-mirror finish. Jigae became frosted silver color finish. (Scale; 1 to 10, 1-3 give deep scratch marks to the steel, 3-5 is delete the 1-3 scratches, 5-8 makes the steel cloudy, 8-10 makes the steel semi-mirror finish or mirror finish) Natural whet

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