The Japanese Knife Care Kit: Everything You Need (UK 2026)

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Updated July 2026 · 7 min read · UK Japanese knife specialists

A good Japanese knife is a considered purchase — and looking after it is what keeps that first-day sharpness for years rather than months. The good news is that a proper knife care kit is short: something to sharpen (a whetstone), something to maintain the edge between sharpenings (a honing steel), and somewhere safe to store the blade. Add good habits — hand-wash and dry straight away — and you have everything a VG10 or AUS-10 knife actually needs.

Below is exactly what we'd put in a care kit, using the real tools we stock, with honest notes on what you need and what you can skip. If you only buy one thing, make it a whetstone — it's the single tool that restores an edge rather than just tidying it.

What goes in a Japanese knife care kit

A Japanese knife earns its keep on a hard, thin, keenly-ground edge — typically VG10 or AUS-10 steel at around 60–61 HRC. That hardness holds an edge beautifully, but it also means the edge is best maintained with the right tools rather than a pull-through sharpener, which can chip a hard blade. Here's the job each piece of kit does.

Sharpen — a whetstone. A whetstone (a Japanese water stone) actually removes a little metal to reset a fresh edge. A coarse-to-medium side (around 400–1000 grit) does the sharpening; a fine side (3000–8000 grit) refines and polishes it. For hard Japanese steel a synthetic waterstone is the right tool — it cuts cleanly and gives you full control of the angle.

Maintain — a honing steel. Between sharpenings the edge rolls very slightly out of true. A fine diamond honing steel realigns it in a few light strokes (and, unlike a smooth steel, lightly sharpens too). The key with hard Japanese blades is a fine, smooth rod and a light touch — skip the coarse, ribbed butcher's steels, which are too aggressive.

Store — a rack or block. Loose in a drawer, blades knock against other tools, dull their edges and become a hazard. A wall-mounted magnetic rack keeps each knife visible, dry and edge-protected without taking up worktop space.

Protect — good habits (free). Hand-wash and dry immediately, never the dishwasher; use a wooden or plastic board, not glass or stone. That's most of knife care done. For a full walkthrough, see our complete Japanese knife care guide.

The kit, piece by piece

Kit at a glance

Tool	Price	Job	How often
Whetstone — the essential	£59.99	Restores the edge	Every few months
Haruta diamond steel	£54.99	Keeps the edge true	Weekly / before use
Magnetic wooden rack	from £39.99	Stores blades safely	Every day
Chikashi chef knife & steel	£142.99	Knife + honing rod in one box	—

A simple care routine

Every use: hand-wash the blade in warm soapy water and dry it immediately with a cloth. Don't leave it soaking in the sink or put it in the dishwasher — heat, detergent and knocks all dull and damage a fine edge.

Weekly, or before a big cook: give the edge five or six light strokes per side on the diamond steel at roughly 15° to bring it back to keen. This is honing, not sharpening — it takes seconds.

Every few months: when honing no longer perks the edge up, sharpen on the whetstone — 1000 grit to set the edge, then 3000–8000 to refine it. Our step-by-step whetstone sharpening guide and the correct sharpening angle walk you through it.

Always: store knives on a rack or in a block rather than loose, and cut on wood or plastic — never glass, ceramic or stone.

Common mistakes to avoid

• Using a pull-through sharpener. The tungsten or ceramic wheels tear a hard Japanese edge and grind away far more steel than a whetstone. Avoid them.

• Reaching for a coarse butcher's steel. The ribbed rods are too aggressive for a thin 60 HRC blade. Use a fine, smooth diamond rod with a light touch.

• The dishwasher. It's the fastest way to ruin a good knife — heat, harsh detergent and jostling all take their toll.

• Over-oiling. Our knives are high-carbon stainless steel (VG10/AUS-10), so they resist rust — you don't need to oil them like a reactive carbon-steel blade. Just dry them. A drop of camellia oil only helps if you're storing a knife unused for a long time in a humid spot.

Frequently asked questions

What do you actually need to look after a Japanese knife?

Three tools and one habit: a whetstone to sharpen, a fine honing steel to keep the edge true between sharpenings, a rack or block to store the blade safely, and the habit of hand-washing and drying it straight after use. That covers everything a VG10 or AUS-10 knife needs.

Do I need both a whetstone and a honing steel?

They do different jobs. A honing steel realigns the edge in seconds and keeps a sharp knife sharp, but it doesn't remove enough metal to fix a genuinely dull blade. A whetstone actually re-sharpens. For everyday upkeep the steel does most of the work; every few months the whetstone resets the edge. If you can only buy one, buy the whetstone.

Can I use a honing steel on hard Japanese knives?

Yes — as long as it's a fine, smooth diamond or ceramic rod and you use light pressure at around 15°. Avoid the coarse, ribbed butcher's steels, which are too aggressive for a thin blade at 60–61 HRC and can micro-chip the edge.

How often should I sharpen versus hone?

Hone weekly or before a big cooking session — it takes seconds and keeps the edge feeling keen. Sharpen on the whetstone far less often: every few months for a home cook, or whenever honing stops bringing the edge back.

What grit whetstone do I need for a Japanese knife?

Around 1000 grit sharpens and sets the edge, and 3000–8000 grit refines and polishes it. A combination stone with both a coarse-ish and a fine side covers a home cook completely — our set includes 400/1000 and 3000/8000 stones, so you can go from repair to a mirror finish.

Do Japanese knives need oiling?

Our range is high-carbon stainless steel (VG10 and AUS-10), which resists rust, so it doesn't need routine oiling like a reactive carbon-steel blade. Simply drying the knife after washing is enough. A light wipe of food-safe camellia oil only helps if you're storing a knife unused for a long time in a humid environment.

Can Japanese knives go in the dishwasher?

No. The heat, harsh detergent and knocking against other items dull the edge, can loosen the handle and encourage spotting. Always hand-wash and dry your knives — it takes moments and protects a considered purchase.

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