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Komon

OZUKU USU

OZUKU USU

No.260701-OZUKUUSU
¥55,000 JPY
¥55,000 JPY
Sale
Shipping calculated at checkout.

Available From: August 01, 2026 10:00 (JST)

AREA : Kyoto

MINE : Ozuku

LAYER : -

REFERENCE GRIT : 8000 - 10000 Grit

SIZE : W78mm/79mm, L214mm, H30mm

INTERPRETATION OF THE STONE

A hard stone with a very smooth sharpening experience that you might find in some Nakayama Namito. Strong cutting speed, good feedback for a harder stone and silky mud produced from the stone.

I found it best suited for edge sharpening producing an exceptionally fine toothy edge on kitchen knives, single bevel like Yanagiba being the best as well as Japanese woodworking tools.

Using the stone I found starting with a surface from a 600 atoma worked best, washing away any mud made from atoma,  a little water to start sharpening produced a fine dark slurry. This worked best for both edge or bevel sharpening. 
As well using a fine nagura also worked very nicely with this stone, Nagura or other finer stone 

A stone best suited for experienced users with great potential for very fine sharpening.

RECOMMENDED USE FOR :

Best suited for kitchen knives, single and double bevel iron clad, carbon steel, edge sharpening, polishing and woodworking tools.

MATERIAL
☑︎ Carbon Steel
◻︎ Tamahagane
☑︎ Wrought Iron
◻︎ Watetsu & Soft Iron Cladding
FORGING STYLE
☑︎ Honyaki
☑︎ Sanmai
☑︎ Damascus
BLADE TYPE
☑︎ Double Bevel Knife
☑︎ Single Bevel Knife
☑︎ Woodworking Tool
PROCESS
◻︎ Kasumi Finish (Polishing)
☑︎ Fine Detail Finish (Polishing)
☑︎ Edge Sharpening
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Prepared for Use

Komon does more than simply select workable natural stones.
Even the finest natural stone cannot be used for sharpening straight from the mountain. Each stone must be carefully prepared and finished before it is ready for use.

At Komon, each stone is carefully prepared and finished by craftsmen with extensive experience and knowledge of natural stones, so that its qualities can be experienced from the moment it is put to use.

  • A STABLE BASE

    We carefully flatten the back side to ensure stability during sharpening. When additional support is needed, we attach a wooden base to create a secure foundation.

    Any wobbling of the stone affects the precision of the sharpening process; stability is particularly crucial during final polishing and edge sharpening.

  • A READY-TO-SHARPEN SURFACE

    The sharpening surface is flattened and prepared for use.
    Softer stones intended for polishing and finishing are given generously rounded edges. Harder stones used for edge sharpening are also carefully rounded to prevent the stone from damaging the blade.

    As a natural stone is used, new layers of stone will gradually appear. Regular flattening and maintenance are therefore essential to keep the stone performing at its best.

  • PROTECTING THE STONE FOR YEARS TO COME

    Natural stones are formed by nature, and some may contain weaknesses that could eventually develop into cracks.
    We identify these stones in advance and, when necessary, reinforce the surrounding areas with cashew resin to help prevent future damage.

    Cashew resin can scratch a blade. Before use, any exposed cashew resin on the corner should be carefully rounded with a medium grit diamond plate.

Natural Stone Selected by Komon

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ACHIEVE REAL FINISHING THE EASY WAY

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Kasumi Powder 50g　霞粉（包丁研磨剤）

¥3,000 JPY
¥3,000 JPY
Sale Sold out
Shipping calculated at checkout.
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Diamond Stone for Professional Sharpeners

Excellent foundation stones for working with natural stone, these NSK Kogyo stones feature precise grain sizes and superior cutting speed.

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