We're sure that you know the parts of a Japanese knife, don't you?
But in this article, we show you the whole picture of the Japanese knife to prevent the confusion.

Because the name of the parts is sometimes called in Japanese words when you talk about the Wa-bocho (Japanese traditional kitchen knives)
We hope that you'll check again the corresponding words in English just in case.

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The below is just for your reference.
A customer had unfortunately been angry at the appearance of a Japanese traditional-style blade and gave a complaint, 

"I recently bought a knife through your online store, which I just received. On inspecting the product, I was disappointed with its quality. The blade was badly fitted to the handle and there was some rust on the tip of the blade. There was also some stain at the back of the blade."

----------------- our answer ------------------
"Thank you for informing the matter about the xxxx.

>The blade was badly fitted to the handle
We're afraid that such a misunderstanding about Japanese traditional style kitchen knife sometimes happens. Some of Japanese traditional style kitchen knives have such a gap between blade and handle as the attached picture.

> there was some rust on the tip of the blade.
This kind of Japanese traditional style kitchen knife is made of "hagane" steel, is easy-rust material. So, Japanese chefs are normally needed to carefully treat the hagane blade before using as well as daily care. The portion in your picture is said a portion where a light rust sometimes happens because the portion can not be finished in the production process and sometimes not be sweat in oil, not like the cutting edge.
That is never a defect but normal situation but an evidence that it is made of good hangane. We recommend you (as we recommend Japanese chefs) to treat the portion by light grinding by hand and sweat it in oil (or roll it by a newspaper or stick it into a telephone book because of a kind of oil in ink).

If you have any question, please feel free to contact us anytime.

Thank you for reading and best regards!

All the Hocho-Knife staff
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“Hocho” represents Made-in-Japan (Sushi / Sashimi) Kitchen Knives,
that is the soul of the cook!
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