Closeup of hands sharpening a KISEKI knife with a KISEKI Knife Attachment for Sharpening on a KISEKI Diamond Whetstone in a kitchen table

KISEKI Knife Attachment for Sharpening on a KISEKI Santoku Knife over a KISEKI Diamond Whetstone

KISEKI Diamond Whetstone and KSIEKI Knife Attachment for Sharpening vertically aligned

KISEKI Diamond Whetstone for Santoku mounted next to a KISEKI Knife Attachment

KISEKI Diamond Whetstone for Petty mounted next to a KISEKI Knife Attachment

Closeup of kitchen shelf where there is a KISEKI Diamond Whetstone and a KISEKI Knife Attachment for Sharpening

KISEKI Diamond Whetstone parts aligned vertically

Lateral view of a KISEKI Diamond Whetstone by Fukuda Hamono

Closeup of hands using the KISEKI Knife Attachment for Sharpening on a KISEKI Santoku Knife

KISEKI Knife Attachment for Sharpening by Fukuda Hamono

KISEKI Knife Attachment for Sharpening on a KISEKI Santoku Knife over a light grey background

KISEKI Diamond Whetstone light grey box with KISEKI Knife Attachament for Sharpening light grey box

Description

Crafted in the legendary blade city of Seki in Gifu Prefecture, this diamond whetstone can be used to keep the sharpness of your KISEKI cemented carbide blade.

The KISEKI Diamond Whetstone has one-sided #1200 grit and comes with a knife attachment made of PP+ Ceramic, that helps creating the perfect angle for sharpening and a natural wood base. (*only use with KISEKI knives)

KISEKI knives are characterized by their good edge retention compared to steel or stainless steel knives, but still the sharpness of the blade will deteriorate over time. Ordinary abrasive tools will not work well with thecemented carbide material of the KISEKI blades, so the smithy recommends this specific stone for their blades.

KISEKI Diamond Whetstone

Name: KISEKI Diamond Whetstone
Brand: Fukuda Hamono
SKU: KIW02
Price: 163.9 USD
Availability: InStock

$163.90 - $163.90

$163.90

$163.90 - $163.90

$163.90

Quantity

Made in Japan

All products are crafted by real Japanese craftsmen with years of experience, as featured in our +1.8 million-subscriber YouTube Channel documentaries.

Crafted in the legendary blade city of Seki in Gifu Prefecture, this diamond whetstone can be used to keep the sharpness of your KISEKI cemented carbide blade.

Specifications

Length	255 mm
Width	71 mm
Height	15 mm
Weight	310 g
Grit Type	Super Fine (#1200)
Made in	Seki-shi, Gifu, Japan

*Includes a knife attachment (PP + Ceramic) and a wooden base.

Product Care Instructions

How to Use & Care for Your KISEKI Diamond Whetstone

Wet the surface with water before sharpening — never soak a diamond whetstone. Fit your KISEKI knife into the included attachment to hold a consistent angle, then work the blade along the #1200 surface, keeping it wet. Use only with KISEKI knives; ordinary whetstones won't sharpen tungsten carbide.

Afterward, rinse, wipe dry, and store in a dry place. A diamond whetstone never needs flattening.

IMPORTANT SAFETY INFORMATION
Keep out of reach of children. Use on a stable, flat surface. Keep fingers clear of the blade edge. For kitchen knife use only.

Shipping + Return Policy

Shipping Policy

All products are crafted, inspected, and shipped directly from Japan.

Please allow up to 5 business days for order processing before dispatch.

Click here for more info on our shipping policy.

Return Policy

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

Click here for more info on our return policy.

Customs Fees & Other Taxes

Import duties, VAT, or local customs taxes may apply once your order reaches your country.

These are set by your local customs authority and are not included in our product prices or free shipping. We suggest contacting the responsible institutions to find more information.

These fees are the customer's responsibility and thus must be paid upon delivery.

FOR U.S. CUSTOMERS: As of May 8, 2026, all U.S. orders are shipped DDP (Delivered Duties Paid). Customs duties and import taxes are included for US customers in the final price shown at checkout.

EU GPSR & Safety Information

Manufacturer Information:

Company Name: Fukuda Hamono Kogyo Co., Ltd.
Address: 353 Oyana Seki, Gifu 501-3941

EU Responsible Person:

Company Name: TerrainQ Solutions UG
Address: Franz-Ehrlich-Straße 12 12489 Berlin, Germany
Phone: +4917643242825
Email: info@cert-rep.com

Product Information:

Product Type: Japanese Sharpening Stone
Intended Use: Sharpening kitchen knives
Country of Origin: Japan

IMPORTANT SAFETY INFORMATION

Use with care. Sharpening blades may cause injury. Keep fingers and hands clear of blade edges during sharpening. Use on a stable, non-slip surface. Keep out of reach of children. Do not use damaged or broken stones. Rinse and dry after use to maintain product condition. Wear appropriate protective equipment if necessary.

About this artisan

KISEKI Petty Knife - Japanese Food Craftsman Shop

Fukuda Hamono

For centuries, Japanese blades have balanced artistry and performance. Yet, traditional steel knives came with trade-offs, carbon steel rusts, stainless steel dulls.

Seeking a better way, engineer Keisuke Fukuda, set out to combine the best of both worlds, pioneering the use of ultra-hard cemented carbide in a kitchen knife.

The result was the KISEKI collection of knives made by his family company Fukuda Hamono, a workshop with more than 126 years of history. The KISEKI knives have an edge made from tungsten carbide that glides effortlessly, holding its sharpness longer than conventional blades.

But creating KISEKI required pushing beyond the limits of conventional knife-making.

The dense, weighty carbide cannot be pressed or laser-cut like steel. Each blade is wire-cut over ten hours with 1/1000 mm precision, then finely ground using diamond wheels to achieve a razor-thin edge that preserves the cellular structure of food.

Every knife is made to deliver the same flawless quality, every single time.

Learn more

KISEKI: by FUKUDA HAMONO: when a 126-year blacksmithing legacy and cutting-edge engineering come together in Seki, Gifu prefecture.

Fukuda Hamono craftsmen checking a Kiseki Santoku knife inside the workshop

Why buy from us?

Japanese Food Craftsman focus on introducing and supporting Japanese artisans, helping them continue their craft and preserve traditional culture for future generations.

When you purchase through us, your support goes to the maker behind the knife, not to mass production or anonymous distribution.

Through our global +1.8 million YouTube community, we share the stories, techniques, and philosophy of these craftsmen with viewers around the world.

The knives we offer are selected through direct relationships and transparent storytelling, not catalogs. Choosing this knife means supporting real people, real skills, and craftsmanship meant to last.

Frequently Asked Questions

How much will shipping cost?

All prices include FREE international shipping. Please allow up to 5 weeks for shipping, depending on your country of residence. Please see our Shipping Policy for details.

Please note: Our products ship directly from Japan to you. You may be required to pay customs duties and/or customs clearance fees upon delivery (if applicable in your country).

FOR U.S. CUSTOMERS: As of May 8, 2026, all U.S. orders are shipped DDP (Delivered Duties Paid).Customs duties and import taxes are included for US customers in the final price shown at checkout.

Do I need to purchase a separate KISEKI Knife Attachment for Sharpening?

You do not need to purchase another KISEKI Knife Attachment for Sharpening separately. One attachment suitable for the knife size (Santoku or Petty) you purchased is included with your KISEKI Diamond Whetstone.

If you wish to use your KISEKI Diamond Whetstone with both your KISEKI Santoku and Petty knives, you may wish to purchase another attachment separately for the size knife you did not originally purchase a Diamond Whetstone for.

Can I use my diamond whetstone to sharpen other knives?

We do not recommend using your KISEKI Diamond Whetstone for other knives made from different materials. The KISEKI Diamond Whetstone was designed for use specifically with KISEKI Santoku and Petty knives by Fukuda Hamono.

How do I use my diamond whetstone to sharpen my KISEKI knife?

Here is a short video on how to use the dedicated KISEKI Diamond Whetstone to brush up your KISEKI knife as intended by Fukuda Hamono. Please be sure to use it on a stable, non-slip surface, ensuring that it is right side up (the side with diagonal patterned lines facing up) and wet with water before use.

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