The **Kai Seki Magoroku Flattening Stone** is the perfect thing to even out the surface of your sharpening stones. After a while, sharpening stones will become slightly hollow. This is completely normal. This flattening stone will return your sharpening stone to its optimal flat way of being!

## How to use the Kai Seki Magoroku Flattening Stone

Use a pencil to mark the places you need to flatten on the sharpening stone, and make sure both stones are wet. Place the sharpening stone on a flat surface and place the flattening stone on top. Make circular motions with the flattening stone so the entire surface is treated evenly. The sharpening stone will be successfully levelled when all pencil markings have completely disappeared. Read more about [lapping a sharpening stone here](/en/ct/sharpening-stones-maintenance.htm).

Kai Seki Magoroku Flattening Stone AP-0335

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Kai Seki Magoroku AP-0331 sharpening stone, 2000 grit

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Kai Seki Magoroku AP-0332 sharpening stone, 4000 grit

Kai Seki Magoroku AP-0333 sharpening stone 8000 grit

Kai Seki Magoroku AP-0334 double-sided sharpening stone, 1000/4000 grit

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Almost all the products we sell come with a manufacturing warranty. Want to learn more about the warranty? Read our topic: [warranty explained](/en/ct/warranty-explained.htm)

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The country of origin is the country the product is produced, as far as we know. This may differ from the country where the brand itself is located.

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General information

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The height/thickness of a sharpening stone (excluding a potential base).

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We always weigh a product as bare as possible. Knives and axes always without their sheath, lights (if possible) without their battery. For knife sets we measure the entire weight. This may deviate from the manufacturer's specifications.

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Dimensions & weight

The material that gives the sharpening stone its abrasive effect. Diamond, ceramics (e.g. aluminium oxide or silicon carbide) or the materials in a natural stone. Read [more about the advantages and disadvantages of these materials](/en/ct/sharpening-stone-materials-which-are-the-best.htm).

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Sharpening guides help you maintain the right angle when sharpening your knives. [Read more about using sharpening guides here](/en/ct/use-of-sharpening-guides-on-whetstones.htm).

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The grain size we give to a sharpening stone. We test all sharpening stones ourselves and add an appropriate grain size on the basis of this test. From extra coarse to ultra fine.

Kai Seki Magoroku Flattening Stone AP-0335