The Infinite Possibilities of Diamond Stone

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NSK Kogyo offers a variety of stone types and grits to address various sharpening needs. Whether you're sharpening kitchen knives or plane or tools etc, NSK Kogyo's vitrified diamond stones deliver optimal performance. What you're sharpening, what steel you're working with, and your preferred grit, and we'll help you find the perfect stone in here.

BEST STONE FOR EACH STEEL

STONE

RECOMMENDATION GRIT

GOOD FOR
OBORO KNIFE 200, 400, 800, 2000

Japanese Steel (Blue/Aogami, White/Shirogami, Yellow/Kigami, SK4)

Carbon Steel (Honyaki, cladding Knife),

Tamahagane

HAKUTO 1 200, 400S, 800, 1500 CPM, HAP40, High Quality Sanmai Knife, Honyaki Knife
HAKUTO 2 3000S, 6000S Honyaki Knife,  wide bevel kitchen knives (both double and single bevel)
HAKUTO 3 12000 wide bevel kitchen knives (both double and single bevel)
KYOKUHA 200, 300, 400, 800, 1000, 4000, 10000

Powder Steel, Stainless

Haircut Scissors

OBORO TOOL 2000, 4000, 6000 For Wood Working Tools
NAGURA 400, 800, 3000, 12000
FLATTENING STONE 200, 600

KEY DETAILS

WHAT DIFFERENTIATES NSK KOGYO COMPARED TO OTHER DIAMOND STONES?

ALL THE STONE SERIES

OBORO KNIFE

Susudake Chopsticks use high-quality natural Susudake: naturally smoked bamboo, originally intended for the production of Japanese abacus. Wakatsuki, the fourth generation president of Kamegawa Soroban, a world-renowned high-quality abacus manufacturer, had been using Susudake for the shaft of their products.

Splitting

Each bamboo is carefully hand-split and cut to rough size. Since the natural material has been smoked for decades to nearly a century under a thatched roof, many of the bamboo cannot be used due to damage by insects or mold. Therefore, it is difficult to select suitable materials, and even after cutting, some of them may not be usable.

Shaping

The selected and pruned Susudake is then crafted into chopsticks. Using Wakatsuki's experience and skill, he shapes each pair of chopsticks, carving them delicately and thinly to ensure that they fit comfortably in your hands and are easy to pick up food with.

Finishing and Polishing

To bring out the natural luster of the Susudake, each chopstick is hand-polished without any coating. The polished surface is glossy and becomes more beautiful with use as it fits comfortably in your hand.

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  • OBORO KNIFE

    Designed for kitchen knife sharpening, the hardness and sharpness that are the advantages of diamond stones can be maximized.

    GRIT RANGE

    200-6000

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  • HAKUTO 1

    Ideal for high quality Sanmai knives and Honyaki knives. Available in a wide range grit from #200 - 10,000.

    GRIT RANGE

    200-10,000

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  • HAKUTO 2

    Softer than HAKUTO1, ideal for Honyaki knives and mirror polishing.

    GRIT RANGE

    3000-10,000

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  • HAKUTO 3

    Softest stone in the HAKUTO series, ideal for wide bevel kitchen knives both double and single bavel.

    GRIT RANGE

    3,000-12,000

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  • KYOKUHA

    Good and for beginner sharpening all types of kitchen knives as it is softer than other stones.

    GRIT RANGE

    200-16,000

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  • OBORO TOOL

    Oboro Tool as an alternative to Natural Stone. Best for Japanese single bevel tools (Kanna plane, Nomi Chisels etc)

    GRIT RANGE

    2,000-6,000

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  • FLATTENING STONE

    This Ftallening Stone is made to work with NSK Kogyo's stones, it helps to restore the sharpness of the grinding stone.

    GRIT RANGE

    200-6,000

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  • NAGURA

    Pieces to make mud to support sharpening/polishing, important for professional sharpener

    GRIT RANGE

    400-12000

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Susudake Chopsticks - Crafted with Care from Select Bamboo

Susudake Chopsticks are made with great care and attention to detail, starting with the selection of high-quality bamboo. Each chopstick is handcrafted by craftsman; Kazuhiro Wakatsuki, cutting, and polishing them to create a beautiful luster and comfortable feel in your hand. No paint or coating is applied; the chopsticks are finished with natural polishing techniques that create a smooth, glossy surface.

The natural beauty of Susudake Chopsticks is immediately apparent upon first use, as the surface becomes even smoother and more polished with each use. These chopsticks are not only a joy to use, but also built to last, making them a lifelong investment for any fan of Japanese cuisine.