Japanese Natural Whetstone Shohonyama Nakayama Kiita 165g from Kyoto Japan
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- Product Code: Nakayama Kiita 165g
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It is a natural whetstone for finishing your knives and razors. Excellent Shohoniyama Nakayama Kiita. Solid, like Ozuku, is also of high density, water penetration is slow. Ample opportunities and ease of use. The difference in thickness is 14mm, I would recommend sticking it to the base, adjusting the amount of bonding to keep it horizontal or flatten the back side. The stone is already ground in, checked (my rating is 5+) and is ready to go (see the last photos). The stone has a very homogeneous structure, accordingly a homogeneous very fine grain, as a finish for razors is simply ideal, not to mention the rest of the cutting tools.
MINES: 中山 Nakayama
BACKGROUND: The Nakayama Quarry was founded about 800 years ago.
The Nakayama Quarry, located on the eastern side of Mount Atago, is part of the East Higashi Mono Quarry.
The Nakayama stones were the property of the Imperial Court due to their high quality and were used to polish swords. These stones have never appeared on the market since the Kamakura period of 1185-1333. And until the middle of the Muromachi era 1336-1573.
Nakayama stones are the most famous and celebrated of all Japanese natural decorative stones.
COLOR: 黄 板 Kiita / Yellow Plate
天然 = Ten’nen/Tennen = natural
砥石 = Toishi = whetstone/hone
京都 = Kyōto
特産 = Tokusan = Special product
⇒ special product natural whetstone/hone of Kyoto
Dimensions: 48-59mm x 90-128mm x 3-15mm (approx.)
Grain size: for finishing process # 10000
Excellent whetstone for razors, knives
The grain size of Japanese lapping stones is quite relative, in any case it is thinner than synthetic stone # 8000. This will give the famous Kasumi coating (cloudy) and prolong the life of the blade. Finish sharpening is done on natural stones, and a smooth, sharp cutting edge is obtained. Japanese natural stones have such properties, because the quality is influenced not by the size of the abrasive particles, but by the shape. This is confirmed by a study by the University of Tokyo. SiO2 abrasive particles are in the form of rounded flakes. They do not abrade, but remove steel like sod, especially on suspension. Thus, not enough steel is removed, but the steel is also removed in such a way that an even jagged edge is not formed, which would be when sharpening on artificial stones.
Using natural stones will allow you to cut finer and at the same time extend the life of the edge. There is a good reason for this. In synthetic stones, the sharpening particles are equal in size, while in natural ones they are not. Consequently, a blade sharpened from synthetic stone will have an even height of serrated teeth, so once those teeth become dull, it will stop cutting completely, but ... when the height is different ... I think you understand my point. It's like shark teeth. They don't break right away.
Also, a natural stone sharpening has a hardening effect on the edge of the blade. This has been scientifically proven by the HRC testing machine, an experiment carried out by the renowned blacksmith Usui Kengo. In fact, the hardness was higher after polishing with a thin natural stone. As you can see, the point is not only in the achieved sharpness of natural stones. After you use natural stones, you will not want to switch to artificial ones.