TAMAHAGANE
玉鋼 — Master Swordsmith Atelier
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関 市 — Seki, Japan — 玉鋼鍛冶

BORN OF FIRE
PERFECTED BY
TIME

Where ancient tamahagane meets meditative precision

Est. 1847 · Seki, Japan · 12 Blades per Year

Commission a Blade Our Heritage
12 Blades Per Year
6 Months Process
1847 Founded in Seki
5th Generation Master
Japanese katana blade
1,200 Years of Tradition

Our Heritage

The Living
Art of Tachi

For over twelve centuries, the Japanese sword has been more than a weapon — it is the soul of a nation forged in iron and fire. The art of swordsmithing, or tatara, began in the Nara period and evolved into the most demanding craft tradition in human history.

At TAMAHAGANE, we are custodians of this unbroken lineage. Our forge in Seki — the city that has produced blades since the Kamakura period — continues the same techniques passed from master to apprentice, generation to generation, for 178 years.

Authenticity

Every blade forged with true tamahagane steel, smelted from iron sand in our own tatara furnace.

Mastery

Our master swordsmith trained under Living National Treasure Yoshindo Yoshihara for 15 years.

Restraint

Twelve blades per year. Not one more. Quality cannot be rushed or replicated.

Heritage

Fifth-generation family atelier, operating from the same forge established in 1847.

The Material

Tamahagane Steel

A steel of extraordinary character, born from three days of continuous fire.
Iron sand, charcoal, and unwavering attention — nothing more.

一

Iron Sand

Satetsu iron sand sourced from the Chugoku mountains — the only ore pure enough to produce true tamahagane.

砂鉄
二

Smelting

Three days in the clay tatara furnace at 1,400°C. Charcoal and iron sand fed by hand in precisely timed cycles.

製錬
三

Folding

The raw steel block is folded up to 16 times, creating over 65,000 micro-layers and eliminating impurities.

折り返し
四

Forging

Hard steel (hagane) wraps soft steel (shingane) — creating a blade that is both razor-sharp and unbreakable.

鍛造
Forge fire heat Blacksmith hammering steel Steel texture metallic

Our Blades

Three Forms.
One Soul.

Each form serves a distinct purpose, governed by centuries of martial tradition and aesthetic principle.

Katana blade
刀

Katana

The quintessential Japanese long sword. Curved, slender, and single-edged — forged for both combat and spiritual contemplation. The ultimate expression of tamahagane craft.

Blade Length 60–75 cm
Steel Tamahagane
Process 6 Months
Commission On Application
Wakizashi forge
脇差

Wakizashi

The companion blade, worn alongside the katana as part of the daisho pairing. Shorter, more intimate — a blade of defense, honour, and the bushido code.

Blade Length 30–60 cm
Steel Tamahagane
Process 4 Months
Commission On Application
Tanto dagger silhouette
短刀

Tanto

A short blade of extraordinary refinement — often considered the most technically demanding form, where every centimetre of steel must achieve perfect balance and geometry.

Blade Length 15–30 cm
Steel Tamahagane
Process 3 Months
Commission On Application

The Process

Seven Stages
of Forging

From raw iron sand to polished blade — each stage demands complete presence. There is no shortcut in a tradition that measures itself in centuries.

Swordsmith at work
  1. 01
    製錬 — Seiren

    Smelting

    Iron sand is smelted over 72 hours in the clay tatara furnace at temperatures exceeding 1,400°C. The resulting tamahagane bloom is fractured and graded by carbon content.

    Duration: 3 days
  2. 02
    小割 — Kowari

    Breaking & Selection

    The bloom is broken into fragments and carefully selected by the master. Only the finest pieces — those with the correct grain and carbon content — are chosen for the blade.

    Duration: 1 day
  3. 03
    積み沸かし — Tsumiwakashi

    Consolidation

    Selected steel fragments are stacked, heated, and hammered into a consolidated billet — the foundation of the blade. This requires precise temperature control and rhythmic hammer work.

    Duration: 2–3 days
  4. 04
    折り返し — Orikaeshi

    Folding

    The billet is folded repeatedly — up to 16 times — creating layers that expel impurities and create the characteristic grain of tamahagane steel. Each fold is a meditation in itself.

    Duration: 1–2 weeks
  5. 05
    素延べ — Sunobe

    Rough Shaping

    The folded steel is drawn out into a rough blade form. The master establishes the basic geometry — length, curve, width — through deliberate hammer strikes guided by a millennium of inherited knowledge.

    Duration: 2–5 days
  6. 06
    土置き焼き入れ — Tsuchioki Yakiire

    Clay Coating & Quenching

    Clay is applied differentially across the blade — thick on the spine, thin on the edge. During quenching, this creates the hamon (temper line) and differentiates the blade's hardness zones.

    Duration: 1 day
  7. 07
    研ぎ — Togi

    Polishing

    Polishing alone takes 6–8 weeks. The polisher uses a progression of increasingly fine stones to reveal the hamon, the grain, and the inner life of the steel. This final stage is the blade's awakening.

    Duration: 6–8 weeks

Commission

A Blade That
Belongs to You

We accept twelve commissions each year. No more. Each blade is the culmination of six months of dedicated work — a single commission occupies the master entirely for that period.

12 Annual Limit
6 Months Process
  • 1
    Application — Submit your commission request. We will review and confirm availability within 2 weeks.
  • 2
    Consultation — A private consultation in Seki (or by video) to discuss blade type, purpose, and aesthetic vision.
  • 3
    Deposit — 50% deposit confirms your commission and secures your place in the annual schedule.
  • 4
    Forging — Six months of dedicated work. Progress photographs at each stage.
  • 5
    Delivery — Your blade is delivered with full documentation, certificate of authenticity, and traditional shirasaya mounting.

Request a Commission

Current availability: 3 of 12 blades remaining for 2026

All commissions reviewed personally by our master swordsmith. We will respond within 14 days.

Testimonials

Words from
Those Who Know

In forty years of collecting nihonto, I have handled blades from every region and every era. The TAMAHAGANE katana I commissioned is not simply the finest modern blade I own — it is among the finest blades I have ever held, period.

Richard Hastings
Nihonto Collector, London · 40-Year Student of Japanese Swordsmithing
★★★★★

As a 7th Dan Iaido practitioner, I am particular about my blades to the point of obsession. The balance, the geometry of the kissaki, the quality of the hamon — everything is exactly as it should be. This blade has become an extension of my practice.

Kenji Murakami
7th Dan Iaido, Kendo World Championships Judge · Osaka
★★★★★

I gifted a TAMAHAGANE tanto to my son on his wedding day — as my father gifted me a blade on mine, and his father before him. To commission a blade here is to participate in something far older than any of us. The process itself was an honour.

Hiroshi Tanaka
Fifth-Generation Blade Collector · Kyoto
★★★★★