SHARPENING STONE

  • OBORO KNIFE

    Designed for carbon steel kitchen knife sharpening, the hardness and sharpness are the advantage of diamond stones can be maximized.
    GRIT RANGE
    200-6000
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  • HAKUTO 1

    Ideal for powdered steel, stainless steel, tool steels etc. 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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OTHER STONES

  • FLATTENING STONE

    This Flattening 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. Achieve precision with Nagura mud for fine grit polishing.
    GRIT RANGE
    400-12000
    CHECK 

HOW TO USE DIAMOND STONE

SHARPENING 101 : THE BASIC

1, FIND YOUR BEST STONE FOR YOUR SHARPENING

The optimal sharpening stone varies depending on what tool you are sharpening and the type of steel it's made of. Whether it's for coarse sharpening to fix chips or fine sharpening to create a precise edge, you also need to determine the grit size. If you're unsure about how to choose a stone, please refer to the page below.
SELECTING FOR YOUR NEED

2, CORRECTS THE KITCHEN KNIFE TO BE STRAIGHT

Here, it should be noted that while explaining how to use the stones is important, it is essential to prepare the item for sharpening to fully unleash the potential of the stone's work. No matter how excellent your sharpening skills may be, trying to sharpen a knife that is already bent will pose difficulties in achieving an even edge. First, let's start by straightening the edge and spine.

3, PREPARING THE STONE SURFACE

Before you begin sharpening, it's essential to flatten the sharpening stone surface. To flatten a Diamond Stone, we recommend using NSK Kogyo's Flattener. In fact, flattening by any other means would be quite challenging. In some cases, using a black #120 stone is also recommended. This helps refresh the surface when the sharpening stone becomes clogged.
CHECK FLATTENERS

4, SHARPENING

Now that you've prepared everything, let's start sharpening! Instead of focusing on a single point of the stone, use the entire surface to sharpen. This allows you to use the stone efficiently and prolong its lifespan.
Don't forget to refresh the stone with clean water regularly. Occasionally, people may notice coarse scratches, which occur when particles from the previous coarser stone get mixed in.
With NSK Kogyo stones, as you sharpen, particles detach from the stone, becoming finer and exhibiting excellent sharpening power. If you notice a decrease in sharpness, use a #120 block to clear any clogs.

CHECK THE VIDEO FOR USAGE INSTRUCTIONS

WOULD YOU LIKE TO LEAN MORE ABOUT NSK KOGYO?

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