Japanese Knife Sharpening NYC — Traditional Whetstone Service

Japanese knives deserve better than a pull-through sharpener. At Green Point Knives, we hand-sharpen Japanese blades on traditional water stones — the same method used in Japan for centuries — right from our fleet of four trucks serving Brooklyn, Manhattan, and Queens.

Why whetstone sharpening for Japanese knives?

Japanese kitchen knives are made from harder steel with thinner, more acute edge geometry than Western knives. That's what makes them extraordinary to cook with — and what makes them easy to ruin on aggressive powered equipment. Whetstone sharpening removes the minimum steel necessary, preserves the blade's original geometry, and produces the refined, polished edge these knives were designed to carry. Every Japanese knife we sharpen is finished entirely by hand.

Yes — we sharpen single-bevel knives

Yanagiba, deba, usuba: most NYC sharpening services won't touch them, because a single-bevel blade sharpened incorrectly is a blade destroyed. Our sharpeners work single bevels on water stones the traditional way, maintaining the flat ura side and the correct bevel angle. If you've been holding onto a single-bevel knife because you didn't trust anyone with it, this is what we do.

What we sharpen

Gyuto, santoku, nakiri, petty, sujihiki, bunka, honesuki, hankotsu — and single-bevel yanagiba, deba, and usuba. Carbon steel, stainless, clad blades, and prized hand-forged knives are all welcome. We assess every knife with you before any steel touches a stone.

Pricing

Whetstone sharpening is $4 per inch for double-bevel knives and $5 per inch for single bevels and specialty edges (70/30, 80/20). A typical 240mm (9.5-inch) gyuto runs about $38. Every knife purchased from us includes free sharpening for life.

How it works

Find the truck — we post each week's Brooklyn, Manhattan, and Queens schedule every Monday on our schedule page, Instagram, and Facebook. Drop off your knives, no appointment needed, and we'll text you when they're ready — typically within 1–2 hours. Pick up any time before we close that day.

We sell Japanese knives, too

Our trucks and online store carry a curated selection of Japanese knives, including Kikuichi — a maker whose lineage traces back over 750 years — plus a custom GPK gyuto. Every knife bought from us is sharpened free for as long as you own it.

Common questions

Can you sharpen a yanagiba or other single-bevel knife?

Yes. Single-bevel sharpening on water stones is our specialty — we maintain the ura and the original bevel angle. It's $5 per inch.

Do you sharpen carbon steel Japanese knives?

Yes — carbon steel (hagane) blades take a beautiful edge on water stones. We'll also show you how to keep the patina healthy and rust away.

My knife has a chip. Can it be saved?

Almost always. We repair chips and re-profile tips ($10 for chips deeper than a dime), removing as little steel as possible before resetting the edge.

How often should a Japanese knife be sharpened?

With regular home use and honing between visits, every 3–6 months keeps a Japanese knife performing the way its maker intended. Professional kitchens typically need monthly service.

Bring your Japanese knives to the truck. Check this week's locations — or read our full knife sharpening FAQ.