How to

How to Use Whetstones

There are three types of whetstones we would like to recommend you to have as basics; coarse whetstones, medium whetstones, and finishing whetstones. Coarse whetstones best fits to grind off a nicked edge of iron blades. Medium whetstones is suitable for normal sharpening and can be used for a variety of knives from stainless-steel knives to iron blades. Finally, finishing whetstones is to keep a sharp edge for long and take it to the professional quality. These three types are must-haves and recommended to own at least one of each.

※ Please see the color coding for types of whetstones and levels of grits.

  • Types of Whetstones
  • Coarse
    for grinding off a nicked edge or re-shaping (grit 60 to 240)
  • Medium
    for general sharpening (grit 320 to 800), pre-final sharpening (grit 1000 to 1500)
  • Finishing
    for final sharpening (grit 2000 to 6000), super-fine final sharpening (grit 8000 to 20000)
For Planes
Grit 60 to 180for grinding off a nicked edge or the back edge.
Grit 600 to 15002better to own at least two different whetstones from this grit range.
Grit 3000 to 8000for elaborate final sharpening.
For Chisel
Grit 80 to 220for angle adjustment.
Grit 60 to 1500hard ones can be used for final sharpening.
Grit 3000 to 6000for final sharpening without damaging the surface.
For Stainless-steel Kitchen knives
Grit 120 to 240must-have item (both-sided ones are suitable)
Grit 500 to 1500perfect for final sharpening.
not needed usually.
For Wrought Kitchen Knives
Grit 60 to 180only for grinding off a nicked edge.
Grit 600 to 1500can be used for final sharpening with slow, elaborate sharpening.
Grit 3000 or morefor final sharpening to get a smooth and sharper edge.

How to Sharpen Knives(Video)

Knives have different shapes and materials depend on its use, and there is no one “correct way to sharpen knives.”
Regarding sharpening kitchen knives, it is often said that the angle between the whetstone and the knife should be of the two coins or around ten degrees. However, this should be considered as just one rough idea for the household kitchen knives as it varies depend on the thickness or hardness of the knife.
It is important to keep sharpening and using the knife to find out the “correct way” for your own knives. In this video, a general sharpening method is explained. This can be an instruction for those who have never sharpened knives before. It is not that complicated process. You will soon get the hang of it.

How to Maintain Whetstones [Maintenance-Whetstone](Video)

It is essential to keep the whetstone flat for a better result. Maintaining the whetstone before and after use with a maintenance-whetstone is necessary.

Whetstone Maintenance Plate [Tairagain](Video)

Usually, you put the maintenance-whetstones on your whetstones you want to maintain. But this unusual product differs from other existing maintenance-whetstones, and you put your whetstone on Tairagain and rub back and forth to make the whetstone flat. Tairagain is as big as 400mm×200mm, which is suitable for speedy maintenance of larger whetstones.

Kitchen Sharpening Stones(Video)

As long as the angle between the whetstone and knife is appropriate, the knife gets sharper. So, we have produced a groundbreaking whetstone from the idea of sharpening can be easier and freer. Your knives revive the sharper edge with this simple method.

Handy Stone(Video)

Put your knife on a board and rub the blade back and forth with Handy Stone. Please keep the end of the stick onto the table, and do not lift it up when you slide it. This secures safety and easiness of sharpening your knives.

Shooting Star(Video)

Two whetstone rollers of ceramic and diamond and flat whetstone are all in this product to enable to sharpen various kinds of knives. Each part is replaceable. To remove the flat whetstone, press down and slide it out.

Two-way Sharpener(Video)

Please apply some detergent on to the roller before use. Also, make sure to soak the flat whetstone into the water.

EZ Sharpening(Video)

Smooth diamond grit sharpener for easy and secure sharpening. The frame with a magnet holds a knife firmly. To sharpen small-size knives, please use the attachment.


Suitable for small-size knives and scissors. Only a few drops of water or oil needed before sharpening knives.
※After product improvement, the current product grit is different from the one in the video.

Whetstone for Carving Knives(Video)

Please use the most suitable dents or back side of the whetstone along the shape and size of your carving knife. For sharpening the U-shaped gouge, it doesn’t have to fit perfectly with the dent. Instead, use the larger dent and sharpen it gradually by turing the gouge. Please be creative and try to use any dents or surface to get the best result.

Rounded Blade Whetstone(Video)

A versatile whetstone for rounded blades like carving knives and chisels. Both the inside and outside of the blade can be sharpened with this product. Please try to find the best angle for your blade on the curve of the whetstone.

Container for Whetstone and Sharpening Board(Video)

A container with a holder frame. Its storage part can be used as a water container which enables you to carry it around and sharpen knives anywhere you want. Convenient to keep the necessary things like dust cloth along with whetstones.

Slide Rack(Video)

Please make sure you buy the correct size of the container when you buy one to use this product.
(Please click this link to check the size.)The container can be used as a tool box. Suitable for those who have many whetstones.

Whetstone Holding Plate(Video)

The grippy rubber plate can be used with both a whetstone holding rack and a whetstone.