How often should I sharpen my Japanese knives?

For a home cook, sharpening on a whetstone every two to three months is typically sufficient. Between sharpenings, a few light passes on a leather strop or ceramic honing rod will maintain the edge. Professional cooks who use their knives daily may sharpen monthly. The key indicator is performance: when your knife starts to slip on tomato skin or crush rather than slice through onion layers, it is time for the whetstone.

What grit whetstone should I start with?

A 1000/6000 combination stone is the best starting point for most people. The 1000-grit side handles all routine sharpening, and the 6000-grit side polishes the edge to a refined finish. This covers the needs of the vast majority of home cooks. You can add an 8000-grit finishing stone later if you want to pursue an even finer edge.

Can I use a Japanese whetstone on Western knives?

Absolutely. Japanese whetstones work on any steel, including Western knives from brands like Wusthof and Victorinox. The only difference is the sharpening angle: Western knives are typically sharpened at around 20 degrees per side, while Japanese knives use a more acute 12-15 degrees. The whetstone itself performs beautifully on both.

What is the difference between the King KW-65 and King HT-65 PRO?

Both are 1000/6000 combination stones from King, one of Japan's most respected whetstone manufacturers. The HT-65 PRO is the professional-grade version, offering a denser abrasive structure that provides a finer scratch pattern, slightly faster cutting speed, and longer stone life. The KW-65 is an excellent entry-level option that delivers great results at a lower price point. Both will keep your Japanese knives sharp and well-maintained.

Sharpening stones

Whetstones. The right tool for a Japanese edge.

Pull-through and electric sharpeners aren’t kind to a hard Japanese blade. A water stone is.

We carry two Japanese whetstones, both made by King — one of the most trusted names in water stones. The combination 1000/6000 covers what a home cook will ever need: the 1000 grit for sharpening, the 6000 for polishing the edge to a finish. The single-grit #800 is the workhorse for restoring an edge that has gone properly dull.

Soak the stone for fifteen minutes before use, set it on a non-slip base, hold the blade at about fifteen degrees, draw it heel to tip. The full method is in Knife School.

King HT-65 PRO 1000/6000

$119

Combination · 1000/6000 grit · Exclusive to Oishya

Our recommended starter. One stone, two grits, all you need for the first decade of caring for an Oishya.

King #800 Japanese Sharpening Stone

$56

Single grit · #800 · Medium

The workhorse stone. Reach for it when an edge has gone properly dull and needs metal moved. Use a finer stone afterwards if you want polish.

A note on care

Soak the stone for fifteen minutes before sharpening. Always use a non-slip base. After use, rinse, wipe, and let it air-dry away from direct sun. Flatten with a flattening stone or a piece of wet-and-dry sandpaper on glass when the surface dishes. Full sharpening method in Knife School.

An edge kept, not replaced.

Ten minutes a month is all the blade asks.

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