MASTER LINE

MASTER LINE

The pinnacle of the SEKIMAGOROKU,
inheriting the craftsmanship and spirit of master swordsmiths.
Their supreme sharpness, born of relentless pursuit and unwavering dedication.

Smooth, stunning sharpness and durability.

Every detail is meaningful, well-designed blade and handle shape.

Functional beauty that grows more endearing with each use.

The MASTER LINE, born from the fusion of traditional craftsmanship cultivated in Seki, Japan’s premier cutlery production area, and innovative technology, is the pinnacle of the SEKIMAGOROKU, with a lineup of exquisite products that can be used and loved for a long time.

SEKIMAGOROKU

The MASTER LINE logo symbolyze the highest quality SEKIMAGOROKU has to offer.
The trajectory of the blade embodies ultimate sharpness, the legacy of the swordsmith’s craft carried on to the present day.
This representation of Japanese craftsmanship and wisdom is at the heart of SEKIMAGOROKU.

Product Features

Kaname

Product FeaturesProduct Features

  • Hakkaku Handle
    (Octagonal Handle)

    The handle was crafted with meticulous care,
    developed through repeated prototyping
    and testing based on feedback
    from customers and professionals.    Learn more

  • Torii-zori

    A meticulously designed
    shapethat combines
    functionality and beauty.    Learn more

  • Steel

    Triple-layer steel with high-hardness
    special stainless blade steel
    as the core material.    Learn more

  • “Kiritsuke” shape

    The ”Kiritsuke” blade shape originated in the traditional Japanese-style kitchen knife.Learn more

See products here

Cutting Boards

  • Gentle on Knife Edges

    Learn more

  • Resistant to Scratches

    Learn more

  • Low Water Absorption
    and Odor-Resistant

    Learn more

See products here

KNIFE BLOCK

  • Compatible with a wide range of knives

    Learn more

  • Removable
    Wooden Parts

    Learn more

  • Hexagonal Design

    Learn more

See products here

Production process of SEKIMAOGOROKU Kaname

1

Laser
Cutting

2

Heat
Treatment

3

Blade Leveling
/ Grazing

4

Bolster
Welding

5

Bolster
Polishing

6

Mirror
Polishing

7

Shot
Blasting

8

Assembling

9

Handle
Polishing

10

Marking

11

Wet-type
blade edging

12

Packing

Laser Cutting
112

Laser Cutting

Laser beam is directed at the material, stainless steel, and cuts out the shape of knife blade from it. The laser cutting process is controlled by computer and also finely structured designs can be cut out by this process. This process requires more time than press working process using molds, but it is widely utilized in the production of articles of elaborate design, in small-lot production and in trial production.

Heat Treatment
212

Heat Treatment

The laser-cut knife blades are heated at 1000℃ in an electric furnace. Next, the steel is cooled, causing its structure to change and forming a hard blade body. Sub-zero treatment is then performed, cooling the metal to approximately minus 80 degrees, ensuring uniform hardness that prevents bending and cracking over time. After the cooling process, blades are heated again to obtain toughness and resilience.

Blade Leveling / Grazing
312

Blade Leveling / Grazing

The blade leveling process consists in polishing the blade tip with a particular polishing material, making it take the shape of a smooth hard clam. Then, the entire blade is more finely polished in the grazing process and a blade entirely polished and with a perfect surface is obtained.

Bolster Welding
412

Bolster Welding

Bolster is welded to the blade. The bolster is a part of the handle that reinforces the junction between the blade and the handle. By welding and fixing the bolster to the handle, it becomes difficult for water to penetrate into the handle and the handle's durability increases.

Bolster Polishing
512

Bolster Polishing

After the blade and bolster are welded together, the joint is ground to eliminate any unevenness. Surfaces that were initially rough are polished to become smooth to the touch.

Mirror Polishing
612

Mirror Polishing

In order to obtain a finish finer than that obtained by the grazing process, the blade is inserted between two rolls and is polished until it reflects images like a mirror.

Shot Blasting
712

Shot Blasting

The knife is sprayed with tiny glass beads. Thanks to this process, the difference in surface roughness between the soft and hard parts of the stainless steel material is evident, and unique layered patterns appear on the blade.

Assembling
812

Assembling

In the assembling process handle is fitted to the blade. Excellently water-resistant pakkawood is used as material for the handles. When fitting the handle, measures to enhance waterproofing property, such as using sealing material to prevent the penetration of water, are taken. Parts produced with MIM technology are used as bolster.

Handle Polishing
912

Handle Polishing

This process consists in polishing the handle of assembled knives and bolster. By polishing the level differences of the small parts and their surface, it is possible to obtain a beautiful, smooth handle. Utilized polishing agents vary according to the part and each part is polished by expert craftsmen.

Marking
1012

Marking

Each kitchen knife has a mark printed on it. The mark indicates the brand name and the lot number that enables to identify its manufacturing date. This system allows the achievement of traceability, making it possible to identify the history of utilized materials, the date and time when each process was carried out and the workmen that carried out the processes.

Wet-type blade edging
1112

Wet-type blade edging

This method of blade edging is utilized for the high class lineup. By doing the grinding pouring water on the whetstone, it is possible to avoid the production of friction heat and to increase greatly the smoothness and the cutting quality of blade tips. Finally, burrs (metal protrusions created during grinding) are removed using tanned leather, and the knife is complete. The sharpness of each knife’s tip is tested one at a time.

Packing
1212

Packing

Completed knives are carefully packed into each boxes.

Other Product Categories

Hakkaku Handle (Octagonal Handle)

Hakkaku Handle (Octagonal Handle)

The handle was crafted with meticulous care, developed through repeated prototyping and testing based on feedback from customers and professionals. Each handle is meticulously hand-carved by skilled craftsmen, resulting in a finish so smooth that the joint with the bolster is barely noticeable.

Torii Sori

Torii Sori

The shape of this knife takes inspiration from the functionality of the Japanese sword’s shape in efficiently applying force to an object and applying it to the task of cutting food, in combination with functional beauty.

Steel

Steel

Triple-layer steel with high-hardness special stainless blade steel as the core material. A special finishing process on the blade tip that creates a thinner edge than on typical knives* reduces resistance when cutting, allowing for more refined, sharp cutting performance with greater blade longevity.

*Compared to the other/existing SEKIMAGOROKU series
“Kiritsuke” shape

“Kiritsuke” shape

The ”Kiritsuke” blade shape originated in the traditional Japanese-style kitchen knife. The sword-shaped tip makes detailed tasks like cutting through meat fibers or decoratively slicing carrots easier, while the functional shape allows for effective use of the entire blade.

Gentle on Knife Edges

Gentle on Knife Edges

Made from rubber and wood powder, this cutting board has good elasticity, which reduces wear on knives and helps them stay sharp longer.

*Research by KAI CORPORATION, comparison with Lightweight Cutting Board [AP5310] (resin cutting board)
Resistant to Scratches on the Cutting Board Surface due to Rubber Elasticity

Resistant to Scratches on the Cutting Board Surface due to Rubber Elasticity

Even if a knife cuts into the board, the rubber elasticity allows it to return to its original shape, improving its resistance to deep cuts. This helps it maintain a flat surface that enables cleaner use.

Low Water Absorption and Odor-Resistant

Low Water Absorption and Odor-Resistant

With low water absorption, it dries quickly and is less likely to breed bacteria or mold. It resists dirt buildup and is less likely to retain strong smells, such as fish or garlic.

Compatible with a wide range of knives

Compatible with a wide range of knives

The blade slots are 70 mm high and 6 mm wide, which accommodates SEKIMAGOROKU Western-style knives with a blade length of up to 210 mm.

*Cannot hold “Waboucho” Japanese-style knives or Chinese knives.
Removable Wooden Parts

Removable Wooden Parts

Wooden parts with magnets can be removed for detailed cleaning, allowing for cleaning of the inside of the block, so it can be kept pristine inside and out.

Hexagonal Design

Hexagonal Design

This knife block features a hexagonal design inspired by the handle shape of SEKIMAGOROKU MASTER LINE knives. This modern take on quintessentially Japanese traditional elements adds a touch of luxury to your kitchen.

*patented design, Design Patent No. 1784656