[ Condition ]

New

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80 x 205 x 45 mm 1,652g Hard Suitable for tools
Produces a good finish
Silica slate from Umegahata, Ukyo-ku, Kyoto City, Yamashiro Province #6,000~24,000 grit The harder the stone, the more skill is required, but the higher the chance of achieving a fine finish. Due to the continuous grooves at the rounded bottom, it maintains its sharpness for about 70% of the time, and with the same grit ratio as artificial whetstones, it is less likely to become a dull, mirror-like finish, making it easier to bring out the contrast derived from the weld lines, material, and carbon content differences.
The darker the rock sap, the harder and finer the stone tends to be. As hardness decreases, sharpness decreases, so sharpen by repeatedly using the nagura stone depending on the purpose and skill level.
A natural whetstone from Yamashiro Province, present-day Kyoto City, whose history traces back to the invention of the Japanese sword.
With a history of nearly 900 years since the end of the Heian period, it is known as the finest and most dignified whetstone in the slate whetstone category.
It was the most important military resource in the long era of swords, and was under the control of the shogunate from the Kamakura period to the end of the Edo period.
In terms of values ​​up to the early modern period, it had a strong nature as an arsenal material, and in modern times it could be called a uranium mine indispensable for nuclear weapons, and therefore needed to be strictly controlled.

It is said that Iyo Province produced whetstones that were already circulating in the Seto Inland Sea during the Kofun period, and is famous as the master of the whetstone industry in the world's oldest and largest igneous rock system, said to be over 1,500 years old.

Our country's whetstone resources possess the power to completely transform a nation and its people.
The unique iron sand metallurgy with a significantly lower yield due to the shortage of iron ore, an

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[ Country of Manufacture ]

If "Made in Japan" is not stated anywhere in the listing, the item may have been manufactured in another country (such as China or Vietnam).

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[ Manual & Menu Language ]

All items are intended for the Japanese domestic market.
Manuals and on-screen menus are typically in Japanese.
Please contact us prior to purchase if you need clarification.

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[ Warranty ]

Japanese domestic warranty only.
If repair is needed, the buyer is responsible for return shipping to Japan and all related costs.
Please consider this before purchasing.

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[ Electronics ]

Voltage: 100V / Plug: Type A / FM Tune: 70–90 MHz
Please ensure compatibility with your country’s power and frequency standards before use.

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[ Multiple Sizes or Colors ]

Please contact us before payment to confirm the availability of specific sizes or colors.

[ Important Notice for International Buyers ]

- Import duties, taxes, and charges are not included in the item price or shipping cost.
- These charges are the buyer’s responsibility.
- Please check with your local customs office for details before purchasing.
- These fees are usually collected by the carrier upon delivery and are not additional shipping costs.

[ Shipping Address ]

We ship only to the address registered on eBay.

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[ Combined Shipping & Bulk Orders ]

Please contact us prior to checkout if you wish to combine multiple items or place a bulk order.
We will arrange the most suitable shipping option for your location and order size.

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