How do I keep a Japanese kitchen knife sharp?

Sharpen on a whetstone rather than a pull-through sharpener or a honing rod, both of which are too coarse for thin Japanese edges. A 1000-grit stone such as the Naniwa Chosera 1000 maintains most knives; add a 3000-grit or higher finishing stone for a keener edge, and wipe carbon-steel blades with a little food-safe mineral oil between uses to prevent rust.

Does Knives and Stones offer a knife sharpening service?

Yes. Alongside the whetstones and care products we stock, Knives and Stones sharpens Japanese knives by hand on whetstones, so you can either learn to sharpen your own edge with our tutorials or send a blade in for restoration.

Japanese Knife Sharpening & Care

Q: 일본 식칼 날카로움 유지 방법

숫돌에 갈고, 연마 사이에 부드럽게 날을 정렬하며, Atoma 플레이트로 숫돌을 평평하게 유지하고, 녹 방지를 위해 칼날을 건조 및 오일 도포하십시오.

Everything you need to keep a Japanese kitchen knife sharp: how to sharpen on a whetstone, which grit to buy, rust and patina care, and how to fix a chipped or dull edge.

Start here

What do you want to do?

Four short guides, written and filmed by us.

Technique

Sharpen on a whetstone

Freehand sharpening step by step — setting the angle, raising a burr, and finishing the edge.

Stones & grit

Which whetstone & grit to buy

Which stone to start with and what each grit is actually for.

Care

Rust, patina & care

Keep a blade from rusting, live with a patina, and lift stains safely.

Repair

Fixing a chipped or dull edge

Why an edge chips or goes dull, and how to grind it back on a stone.

Watch

From the Knives and Stones workshop

Our own sharpening and care tutorials — tap to play.

Shibata Bitey Finisher Sharpening Stone Compared Under the Microscope

Which 1000 Shapton to buy? The Professional (Kuromaku) vs Glass vs Rockstar

Naniwa Chosera 1000 vs Shapton Kuromaku 1000, the result will surprise you.

Knife Rust Prevention the Cheap Way, Tsubaki (Camellia) Oil Alternatives

Restoring a badly sharpened Japanese knife: the cause and the fix. You probably seen one before

Fixing a Japanese Knife Chip, Cheap as Chips

Japanese Kitchen Knife Sharpening Tutorial - Part 1 Free Hand Sharpening

Knife Sharpening Tutorial: a sharp knife does not mean it can cut, knife thinning explained

Sharpening Mistake: Counting How Many Strokes

Sharpening Stone for Less than $5 and Actually Works?

The Naniwa Chosera 800 and 1000 Sharpening Stones Compared

DIY Board Wax (Butter) with Beeswax, Mineral Oil and Coconut Oil

HOW TO USE: Koyo Sunlite Polishing Paste (Blue for Steel)

Questions about this

일본 식칼 날카로움 유지 방법

일본 칼의 날카로움을 유지하는 것은 네 가지 습관에 달려 있습니다. 절삭력이 무뎌지면 숫돌에 갈고, 사용 사이사이에 날을 부드럽게 정렬하며, 숫돌을 항상 평평하게 유지하고, 사용 직후 즉시 물기를 닦아내어 젖은 상태로 두지 않는 것입니다.

대부분의 가정 요리사는 중립 숫돌 하나로 시작하면 충분합니다. Knives and Stones에서 초보자가 가장 안전하게 선택할 수 있는 기준은 재고 보유 중인 Naniwa Chosera 1000이며, 이상적으로는 400/1000/3000 단계 구성으로 갖추고 Atoma 다이아몬드 플레이트로 숫돌의 평탄함을 유지하는 것입니다. 평평한 숫돌이 잘 드는 칼과 그렇지 않은 칼을 가릅니다.

관리와 연마는 하나의 시스템입니다. 갓 간 날도 젖은 채 두면 녹이 슬고, 관리되지 않은 숫돌은 둥글고 고르지 못한 날을 만듭니다. 아래의 네 가지 세부 페이지에서 각 단계를 차례로 설명합니다.

Reviewed by James Zhang · Last updated 3 June 2026

We trust this information is correct at the time of writing, but it is not an official document and details may change without notice. If you spot an error, tell us and we'll fix it.

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