…Nagura stones (produced in Shitara-cho, Aichi Prefecture) have fine abrasive grains and are used to correct the surface of finishing stones. Oil stones are a type of finishing stone, made of dense quartz. They are named after the fact that a few drops of oil are dropped on the stone surface instead of water to sharpen the stone. … *Some of the terminology that refers to "oil grinding wheels" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…名倉砥(愛知県設楽町産)は砥粒が微細であり,仕上げ砥の表面の修正に使われる。油といしは仕上げ砥の一種で,石英質の緻密(ちみつ)なといしである。といし面に水のかわりに油を数滴落として研ぐので,この名がある。… ※「油といし」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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