Ryujin Swords

Polishing Stones

The following are professional items specifically for polishing swords. They are therefore not identical with the more commonly available waterstones. In addition, some of the items are heavy; carriage costs are included in the price.

Please note that natural stones are subject to availability. Uchi-gumori is particularly difficult to get hold of, since the quarry supplying it has been exhausted. It is therefore advisable to enquire before ordering.

Due to their weight, we will have to charge shipping for the larger stones. Please ask us for a quotation. In order to keep shipping prices down, we will ask our Japanese supplier to ship them directly to you.


Polishing Kit

Polishing kit. A beginner's set that includes almost all the necessary items to polish a sword, such as several polishing stones and items for finishing work. These are the same quality as the professionals use. 805.62

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Finishing Stones

Hazuya 300 g. Thinned out pieces of uchigumori for finish work. It is used to bring out the hamon. 124.56


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Lacquered hazuya 100 g. Hazuya lacquered with tanned yoshino-gami (persimmon paper). The paper prevents the hazuya from crumbling. 85.18

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Jizuya 300 g. Thinned out pieces of narutaki for finish work. It is used to bring out the jihada. 124.56


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Lacquered jizuya 100 g. Jizuya lacquered with tanned yoshino-gami (persimmon paper). The paper prevents the jizuya from crumbling. 85.18

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Shin-jizuya Arashiyama. Artificial jizuya lacquered with yoshino-gami. 3 pieces. 106.18

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Uchigumori Koppa 2 kg. Rocks of uchigumori stone. Used to make hazuya by chiselling off small flakes and grinding it until it is very thin. 159.12

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Narutaki Koppa 2 kg. Rocks of narutaki stone. Used to make jizuya by chiselling off small flakes and grinding it until it is very thin. 159.12

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Natural Polishing Stones

Ara-to. The first stone of the groundwork, and used before Binsui-do. It is coarse and very large. Recently the synthetic stone Kongo-do has been substituted for this. Dimensions : 22 x 7 x 11cm. Weight : 4.5kg 124.09

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Binsui-do. The second stone of the groundwork. Binsui-do removes the marks left by Kongo-do or Ara-to. It is important at this stage to establish the shape of the blade, because the blade will not change its shape with the later, finer stones. By the end of the Binsui stage the outline of Hamon becomes visible. Dimensions : 21 x 6 x 7cm. Weight : 2.2kg 76.85

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Kaisei-do. The third stone of the groundwork, and used before Chu-nagura-do. Kaisei-do removes the marks left by Binsui-do. Dimensions : 23 x 6 x 8.5cm. Weight : 2.8kg. 230.91

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Chu-nagura-do. The fourth stone of the groundwork, and used before Koma-nagura-do. Chu-nagura removes the marks left by Kaisei-do. Chu-nagura and Koma-nagura come from the same quarry but Chu-nagura is coarser. Dimensions: 20 x 4.5 x 6.2cm. Weight: 1.2 kg

Options

Kasumi-do. One of the final stone of the groundwork. It can make the ha white and gives a clear contrast between ji and ha. It works particularly well witha hard blade. At this stage the hamon has usually become clearly visible. There is no synthetic alternative for Kasumi-do. Typical dimensions: 20.8 x 7.7 x 5cm. Weight: approx 2 kg.

Options

Uchigumori-do. One of the final stones of the groundwork. It can make the ha white and gives a clear contrast between ji and ha. It works particularly well witha hard blade. At this stage the hamon has usually become clearly visible. There is no synthetic alternative for Uchigumori-do. Typical dimensions: 22.4 x 8 x 3.8cm Weight: approx 2 kg

Options


Synthetic Polishing Stones

Tora-jirushi Kongo-do #80. Artificial stone and substitute for Ara-to. The stone of the groundwork, used before Binsui-do. Kongo-do is used when the sword is rusted or has a flaw. No. 80 is used especially when the sword is rusted heavily. Dimensions 20 x 5 x 5 cm, weight 1.6 kg. 105.06

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Asahi Kongo-do #180. Artificial stone and substitute for Ara-to. The first stone of the groundwork, used before Binsui-do. Kongo-do is used when the sword is rusted or has a flaw. Dimensions 20.5 x 5 x 7.5 cm, weight 1.4 kg. 116.43

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Asahi Kongo-do #180 hard type. Artificial stone and substitute for Ara-to. The first stone of the groundwork, used before Binsui-do. Kongo-do is used when the sword is rusted or has a flaw. Asahi Kongo-do No. 180 Hard Type is good for hard swords such as gendai-to. Dimensions 20.5 x 5 x 7.5 cm, weight 1.4 kg. 116.43

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Tora-jirushi Kongo-do #120. Artificial stone and substitute for Ara-to. The first stone of the groundwork, used before Binsui-do. Kongo-do is used when the sword is rusted or has a flaw. No. 120 is used when the sword is rusted heavily. Dimensions 20 x 5 x 5 cm, weight 960 g. 77.79

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Asahi Kongo-do #220. Artificial stone and substitute for Ara-to. The first stone of the groundwork, used before Binsui-do. Kongo-do is used when the sword is rusted or has a flaw. Asahi Kongo-do No. 220 is the most popular among all Kongo-do. Dimensions 20.5 x 5 x 7.5 cm, weight 1.4 kg. 116.43

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Asahi Kongo-do #220 hard type. Artificial stone and substitute for Ara-to. The first stone of the groundwork, used before Binsui-do. Kongo-do is used when the sword is rusted or has a flaw. Asahi Kongo-do No. 220 Hard Type is good for hard swords such as gendai-to. Dimensions 20.5 x 5 x 7.5 cm, weight 1.4 kg. 116.43

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Kongo-do Tokkyu-hin. Artificial stone and substitute for ara-to. First stone of the groundwork and used before binsui-do. Kongo-do is used when the sword is rusted or has a flaw. Kongo-do Tokkyu-hin is used by many professional polishers as it can whet very quickly and efficiently. The particle size is uniform, so you you can polish the blade uniformly. Dimensions 21 x 5 x 7.5 cm, weight 1.6 kg. 173.24

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Binsui-do Tokkyu-hin. Artificial binsui stone and a little coarser than Asahi Binsui-do. The second stone of the groundwork, used before Kaisei-do. Binsui-do removes the marks of Ara-to or Kongo-do. At this stage it is important to make the shape of the blade, because finer stones will not affect the shape. The outline of the hamon becomes visible by the end of the Binsui stage. The particle size of Binsui-do Tokkyu-hin is uniform, so that you can polish the blade uniformly. Dimensions 20.5 x 5.5 x 7.5 cm weight 1.5 kg. 252.79

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Asahi Binsui-do. Artificial binsui stone and somewhat coarser than Shin-Asahi Binsui-do. The second stone of the groundwork, used before Kaisei-do.Binsui-do removes the marks of Ara-to or Kongo-do. At this stage it is important to make the shape of the blade, because finer stones will not affect the shape. The outline of the hamon becomes visible by the end of the Binsui stage. Dimensions 20.5 x 5 x 7.5 cm, weight 1.4 kg. 150.52

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Shin-Asahi Binsui-do. Artificial binsui stone, and somewhat finer than Asahi Binsui-do. The second stone of the groundwork, used before Kaisei-do. Binsui-do removes the marks of Ara-to or Kongo-do. At this stage it is important to make the shape of the blade, because finer stones will not affect the shape. The outline of the hamon becomes visible by the end of the Binsui stage. Dimensions 20 x 5 x 6 cm, weight 1.8 kg. 207.33

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Asahi Kaisei-do. Artificial Kaisei stone. The third stone of the groundwork used before Chu-nagura-do. By this stage the marks left by Binsui-do are removed and the surface of the sword will get smoother and finer. The hardness is similar to natural Kaisei. This stone is used by many professional polishers. Dimensions : 20 x 5 x 6 cm, weight 1.7 kg. 241.43

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Kaisei-do Tokkyu-hin. Artificial kaisei stone. The third stone of the groundwork used before Chu-nagura-do. By this stage the marks left by Binsui-do are removed and the surface of the sword will get smoother and finer. Kaisei-do Tokkyu-hin whets the sword very quickly and efficiently, and the particle is uniform, so that the blade is polished uniformly. It is said that this stone makes Shinogi-suji appear sharp. Dimensions 20.5 x 5 x 7.5 cm, weight 1.4 kg. 264.15

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Asahi Chu-nagura-do. Artificial chu-nagura stone, and a little harder than the natural stone. The fourth stone of the groundwork, used before Koma-nagura-do. During this stage the marks left Kaisei are removed. Dimensions 20 x 5 x 5 cm, weight 1 kg. 445.97

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Kaishin-do, large size. An artificial stone substitute for chu-nagura-do. It is soft and whets the blade very quickly and efficiently. 419.09

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Kaishin-do, medium size. An artificial stone substitute for chu-nagura-do. It is soft and whets the blade very quickly and efficiently. 373.64

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Kaishin-do, small size. An artificial stone substitute for chu-nagura-do. It is soft and whets the blade very quickly and efficiently. 191.82

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Asahi Koma-nagura-do. Artificial koma-nagura stone. The fifth stone of the groundwork and used before uchigumori-do. If the polishing work is not done completely at this stage, and the marks left by Chu-nagura remain, it is difficult to achieve the effect of Uchigumori-do. The hamon has usually become clearly visible at this stage. Dimensions 20 x 5 x 5 cm, weight 960 g. 491.43

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White Koma-nagura-do. Artificial koma-nagura stone. The fifth stone of the groundwork; used before uchigumori-do to remove the marks left by Chu-nagura. If the polishing work is not done completely at this stage, and the marks left by Chu-nagura remain, it is difficult to achieve the effect of Uchigumori-do. The hamon has usually become clearly visible at this stage. Dimensions 18 x 5 x 5 cm, weight 860 g. 218.70

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Precision diamond stone Sanwa #1000. Polishing stone for sword, plane or chisel. It removes the marks of binsui very quickly and can be used as a substitute for kaisei. Dimensions 20.5 x 7.5 x 2 cm, weight 900 g. 559.61

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Precision diamond stone Sanwa #500. Polishing stone for sword, plane or chisel. It whets the blade efficiently. The work of kongo and binsui can be done by this one stone alone. Dimensions 20.5 x 7.5 x 2 cm, weight 900 g. 559.61

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Diamond Stone EZE-LAP #400. Polishing stone for sword, plane or chisel. Made in the USA. It whets the blade efficiently. The work of kongo and binsui can be done by this one stone alone. You can also grind down hazuya or jizuya very quickly using this stone. Dimensions 20.3 x 7.5 x 5cm, weight 750 g. 264.15

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Diamond Stone EZE-LAP #150. Polishing stone for sword, plane or chisel. Made in the USA. It grinds the blade efficiently, and can be used for kongo. Also good for grinding hazuya and jizuya. Harder Jizuya can be grinded quickly. Dimensions 20.3 x 7.5 x 5cm, weight 750 g. 332.33

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Other Stones

Tsushima-do for omote-zuri. Natural polishing stone for omote-zuri for uchigumori-do and suita-do. Omote-zuri is used to smooth the surface of the polishing stone. Dimensions 4 x 4 x 4 cm. 54.35

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Omura-do. A natural stone used to prepare hazuya and jizuya. The surface of hazuya and jizuya is initially ground on omura-do before being ground on finer stones to make it usable. Dimensions: 22 x 7 x 11 cm. Weight: 4.2 kg

Options

Ao-to. A natural stone used to prepare hazuya and jizuya. The surface of hazuya and jizuya is initially ground on a coarse stone such as omura-do. They are then ground on ao-to and finally on uchigumori-do. 218.50

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