Sakai Toku Knives | Let's Check Your Knife's Sharpness!

Hello, I'm Okuhira, owner of "Japan Knife TOKU"
In Asakusa, we sell, resharpen, and provide sharpening classes for knives made by artisans nationwide, including those from Sakai, Osaka.

In this article, I will explain "how to check the sharpness of your knife" in an easy-to-understand way.

A common way to check knife sharpness is to see if it can "cut a tomato skin."
If you place the knife blade on the tomato skin and it slides, the sharpness has likely deteriorated.
If the blade eventually cuts through after being moved back and forth on the tomato skin for a while, you might think, "It's still fine!", but its sharpness has already declined, so it's "time to sharpen."

If you don't have a tomato, try cutting a sheet of A4 copy paper.
It's best to refer to the video for how to cut, but
if you hold the edge of the paper and insert the knife blade diagonally in the opposite direction of your hand,
the blade will cut into it if it's sharp.
If it's dull, the blade will slide without cutting in.
→Sharpness check video

If several months have passed since you purchased your knife, or since you last sharpened it,
please try checking its sharpness.

If you don't know how to sharpen a knife, or can't find a place nearby to sharpen it,
please use Houchou no Sakai Toku's resharpening service →Resharpening Service

About Japan Knife TOKU (Asakusa)

Japan Knife TOKU is a specialty knife store in Asakusa.
•                   We handle a wide range of knives, from household to professional use
•                   Thorough advice at the time of purchase
•                   Support for resharpening, repairs, and handle replacement
•                   We also offer sharpening classes and experiences

 We value supporting customers to use their knives for a long time, rather than just "selling and being done."

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Store Information (Asakusa)

Japan Knife TOKU Asakusa Store
(Opening April 2025)
Hours: 10:00 AM - 6:00 PM
Location: NW Building 6F, 1-11-4 Hanakawado, Taito-ku, Tokyo
•                   1 minute walk from Tobu Skytree Line "Asakusa Station" North Exit
•                   4 minute walk from Tokyo Metro Ginza Line "Asakusa Station"