The Tsukamakishi: Expert Techniques for Handle Wrapping and Maintenance

What Is a Tsukamaki-Shi? — The Specialist Craftsman Who Breathes Life Into the Grip

The tsuka (grip) of a Japanese sword is not merely a handle. It is a precision structure that connects the blade forged by a swordsmith to the wielder's hand, combining both function and beauty. The craftsman who specializes in creating and restoring this grip is called a tsukamaki-shi (grip-wrapping master).

The work of a tsukamaki-shi is not merely "wrapping thread." Shaping the tsuka-ki (grip wood), affixing the same-gawa (ray skin), positioning the menuki (grip ornaments), selecting thread and managing tension, and final shape refinement — all of these are included within a single profession as a sophisticated technical system.

The Structure of the Tsuka — The Components the Tsukamaki-Shi Works With

The tsuka handled by a tsukamaki-shi is composed of the following components.

Tsuka-ki (Grip Wood)

The wooden core component of the grip. In most cases, magnolia wood (hoo-no-ki) is used. The interior is carved to match the shape of the blade tang (nakago), and the wood is shaped so the tang fits perfectly.

Since the tsuka-ki is structured to encase and secure the tang, it must conform completely to the tang's shape (length, width, and curve). This shaping precision determines the overall quality of the grip.

Same-gawa (Ray Skin)

The material covering the exterior of the tsuka-ki. Although the name means "shark skin," it is actually the skin of a stingray (particularly the red stingray). Ray skin with uniformly arranged fine granular nodules possesses excellent friction coefficient and water resistance, preventing the sword from slipping in the hand.

Same-gawa Quality and Grade: The uniformity of the granules, density, and purity of white color determine quality. There is a convention of affixing the skin so that the center (the larger-grained section called "nakago" or "hoshi") is positioned toward the grip pommel.

Ito (Thread)

The thread wrapped over the same-gawa is called "tsukamaki-ito" (grip-wrapping thread). The material, color, twist strength, and wrapping method of the thread determine both the function and appearance of the grip.

Materials and Types of Tsukamaki-Ito

Kinuito (Silk Thread)

The highest-grade material. It has luster and is used in refined koshirae (sword fittings). However, it can degrade more quickly than cotton thread with age, requiring regular maintenance.

Menito (Cotton Thread)

Slightly lower in grade than silk but superior in durability and cost-effectiveness. It was used on many practical swords and samurai swords during the Edo period. It is widely used on contemporary iaido swords.

Kawa (Leather)

"Kawa-maki" (leather wrapping) wraps the grip with ray skin leather or deer leather. It is lightweight with good grip when dry. It was adopted on practical swords used by generals and foot soldiers in field warfare.

Thread Color

The thread color is chosen to match the overall formality and aesthetic of the koshirae.

Black: The fundamental color of the samurai class. It embodies the aesthetic of substantial strength and sincerity.

Navy and Deep Green: Common in formal samurai koshirae. Elegant and conveys a dignified impression.

White and Natural: Used in koshirae for Shinto priests and court-related appointments, or on special ceremonial swords.

Brown, Gold, and Vermillion: Used in lavish koshirae or special designs.

Types of Wrapping Methods — The Heart of the Tsukamaki-Shi's Technique

There are numerous tsukamaki wrapping methods (wrapping styles), each with different function, appearance, and formality.

Moro-Hineri-Maki (Twisted Wrapping)

The most common wrapping method. A style in which diamond-shaped sections of exposed ray skin are spaced at regular intervals. It offers a good balance of practicality and appearance, and was widely adopted as the standard koshirae for the uchi-gatana.

Jabara-Maki (Serpentine Wrapping)

A style where the thread is wrapped densely like a serpent's belly, with no (or minimal) diamond-shaped ray skin exposure. It maximizes grip strength and was used in combat-oriented koshirae.

Hira-Maki (Flat Wrapping)

A style in which thread is wrapped flat and evenly with no gaps. The ray skin is either completely hidden or only minimally exposed. It gives the grip a uniform appearance and is used in ceremonial and decorative koshirae.

Katate-Maki (One-Hand Wrapping) · Ryote-Maki (Two-Hand Wrapping)

The wrapping style varies depending on grip length — whether designed to be held with one or two hands. The grip position and thread placement are optimized according to the length of the tachi or uchi-gatana.

The Apprenticeship of a Tsukamaki-Shi — Learning the Craft

Beginning the Apprenticeship

Apprenticeship as a tsukamaki-shi begins by entering a master craftsman's workshop. In contemporary times, as with sword smiths and polishers, training at specialized schools and craftsmen's associations is also undertaken, but the traditional apprenticeship system remains the mainstream.

First Stage: Handling materials — learning how to select, cut, and soak same-gawa in water (wetting it to soften it, then adhering it tightly to the tsuka-ki).

Second Stage: Shaping the tsuka-ki — carving and refining to match the tang shape. This precision determines the overall quality.

Third Stage: Thread wrapping — the most time-consuming process. Repeated practice until the thread tension (which must be consistent), angles, and intersection handling become uniform.

It typically requires five to ten years to become independent as a fully trained tsukamaki-shi.

Modern Challenges

The tsukamaki-shi profession is a small field within the sword industry. The shortage of successors is severe, with craftsmen continuing to retire. Conversely, demand for grip repair and replacement has increased due to growing numbers of practitioners of iaido and test cutting, as well as the Japanese sword boom. This supply-demand imbalance is a challenge for the industry.

Maintenance and Lifespan of Tsukamaki

Tsukamaki is a consumable item. Regular maintenance is necessary, and when conditions deteriorate, "re-wrapping (maki-naoshi)" becomes required.

Deterioration from Sweat and Oil: The grip-wrapping thread on frequently used swords absorbs hand sweat and oils, causing damage. Silk thread in particular may degrade within five to ten years.

Ray Skin Separation: Extended use or poor storage conditions can cause the same-gawa to separate from the tsuka-ki.

Cost of Re-wrapping: At current rates, re-wrapping a standard uchi-gatana grip costs approximately several tens of thousands of yen (varying by material, craftsman skill, and region).

Conclusion — How the Tsukamaki-Shi's Skill Makes a Japanese Sword "Usable"

No matter how excellent a blade forged by a sword smith is, it becomes unusable if the tsukamaki is improper. Loose thread, separated ray skin, and uneven wrapping compromise the sword's stability in hand and, in the worst case, create the danger of the sword slipping away.

The work of a tsukamaki-shi is that of an unsung support. While observers of a completed koshirae admire the "beauty of the sword," it is the skill of the tsukamaki-shi — quietly wrapping thread in an inconspicuous place — that realizes this beauty together with functionality.

Japanese sword culture centers on appreciating the blade, hamon, and jihada, but understanding the tsuka — and the existence of the craftsman known as the tsukamaki-shi — reveals a richer, fuller picture of Japanese sword culture.