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Komon

HIDERIYAMA KOPPA

HIDERIYAMA KOPPA

No.260701-HIDERIYAMAKOPPA
¥15,000 JPY
¥15,000 JPY
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Shipping calculated at checkout.

Available From: July 13, 2026 10:00 (JST)

AREA : Kyoto

MINE : Hideriyama

LAYER : -

REFERENCE GRIT : 3000-6000 Grit

SIZE : W 75mm/ 85mm, L 150mm, H 30mm

INTERPRETATION OF THE STONE

This Hideriyama though a koppa, could handle most knives well. The sharpening experience was silky smooth across the entire stone with great feedback.

A bit on the muddy side but not to much that it can feel sticky, it produced a good kasumi finish easily. Overall a very easy stone to use, in the 3k-6k range depending on how you manage water and slurry. Best suited to single bevel and wide bevel carbon steel knives with soft cladding.

RECOMMENDED USE FOR :

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

Komon

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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