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What is a whetstone?

A whetstone is a tool used to sharpen or polish for metals and rocks.

As a store specializing in knives and tools,
we carry a wide variety of whetstones for knives, carpenter's tools, sickles, and more.

The types of whetstones we have are listed below.
Click on the name or photo to be directed to each category.

Natural whetstones are made from stones collected from the natural environment. This allows us to produce blades with a sharpness and beauty that cannot be replicated by artificial whetstones.
However, you need to be careful to judge the quality of natural whetstones and whether they are suitable for your purposes.

Click here for a list of natural whetstone products>>

whetstones are the most common and widely used whetstones.
We have a wide variety of whetstones and grits available , including rough whetstones, medium whetstones, finishing stones, and super finishing stones, so you can use them to maintain a variety of blades.

The grit size is #2000 to #6000 .
This whetstone further refines the blade that has been conditioned with a medium whetstone .
It is also used for the final finishing, making the blade even sharper.
If there are no chips in the blade, simply use a finishing whetstone after daily use to further strengthen the blade edge.

The grit size is #800 to #1500 .
It is used for general resharpening and is the standard whetstone for sharpening to a sharp blade.
For home use, a medium whetstone alone will be enough to sharpen the blade. If you are concerned about sharpness, you will need to finish it with a finishing whetstone.

The grit size is #2000 to #6000 .
This whetstone further refines the blade that has been conditioned with a medium whetstone.
It is also used for the final finishing, making the blade even sharper.
If there are no chips in the blade, simply use a finishing whetstone after daily use to further strengthen the blade edge.

This applies to whetstones with a grit size of #8000 or higher .
These whetstones can be used to give a more delicate finish to the edge of a knife that has already been finished.
They are used for the maintenance of professional knives and carpentry tools that place importance on appearance and cutting edges.

By combining whetstones of different grits, it is a convenient whetstone that can sharpen more than one item.
It can be stored compactly and is easy to carry.

This is a whetstone set that we recommend.
We have a variety of whetstone and whetstone stand sets , as well as sets for beginners that come with a sharpening holder (assistant) .

Click here for details on square whetstones>>

Diamond whetstones are made of diamond particles that are hard and resistant to wear. Extremely high abrasive power. It can be used for sharpening hard blades and on the surface of whetstones.
Diamond whetstones are classified into two types according to their manufacturing method: " electroplated " and " sintered ."

A grindstone with diamond particles fixed to the metal surface by plating.

A grinding stone made by combining diamond particles with a binder and sintering them under high temperature and pressure.

・The particles stick sharply to the blade, providing a high abrasive power.
・Most of them are relatively inexpensive.

Compared to electroplating, the scratches are shallow and can be easily removed.
It can be used for a long time.

Diamond particles are simply attached using a plating process, so they don't last very long.

・Abrasive power is slightly weaker than electroplated type.
・Most are expensive.
・Needs to be resurfaced due to clogging.

Sickle whetstones and curved whetstones are ideal for sharpening tools with curved blades, such as sickles and scissors .