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【天然砥石 正本山 山城銘砥 天井内曇巣板巣なしから広い板 3074】
黒は鉄の華｡他の色は石自体が磨耗した砥泥｡鉄華即錆のものは煙硝等､酸化的雰囲気の石であるか､生地が特に精細であるもの｡ The Iron flower seems black. If the flower changes own color immediately ,we can assume the grit is so fine. But the cause of the change may come from the atmosphere of nitrous sulfate. We must notice where is the cause belong to???And there is many imitation around us. Other colors seems stones is made of slurry. Poor class can make only slurry...But moderate quantity of the slurry is so necessary to sharpen and improve the feeling during sharpening process. Their balance are depend on our feeling ,skill ,uses and favor. please dont hesitate to gain the experience. The grit of Japanese water stones can be shrunken as well as you sharpen. It is the best characteristic of the Japanese whetstones. Absolutely ,Iyo mate has the widest grit range which variations are depend on only one stone. Certainly ,Iyo mate has much kind of starting grit. Called Tetsuhami starts from #500 ,and go to less than #800. Called Iyo Meshime starts from more than #1000 ,and go to more than #3000. One of the Iyo that is belong to full mirror finish stones. You know ,one of the Western sharpening technology which is called making slurry. It is made by to rub particle stones ,diamond plate or the same materials. As is often the case ,JP calls it Nagura-Kake or Metate. Iyo mate is discovered stone in Japan at first.';info(text);return false;" style="font-size: 10px; background-color: rgb(0, 0, 255); color: rgb(255, 255, 255);" name="B3" title="translate to English" value="English" src="http://www.330mate.com/data/fujibato/image/eng.jpg" type="image" align="left">English
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