Tsukamaki: Types of Thread, Wrapping Methods, and DIY Maintenance

What is Tsukamaki?

Tsukamaki (handle wrapping) is a traditional technique of wrapping string or leather around the tsuka (handle) of a Japanese sword. It is not merely decorative—it serves important practical functions: enhancing grip, preventing the hand from slipping, and protecting the tsuka-gi (handle wood). Furthermore, the wrapping method and materials alter the overall quality and purpose of the sword, making it one of the sword fittings where the craftsperson's individuality and skill shine most brightly, along with the tsuba, menuki, and fuchi-kasane.

Inside the handle is the nakago (tang), which is secured by a mekugi (wooden peg). The handle wood is typically covered with same-gawa (ray skin), which serves as the base for the wrapping string. The granular texture of the same-gawa grips the string and prevents slipping. In other words, tsukamaki functions as a structure where the same-gawa and string work together as one.

When handling a sword, the first thing one touches is the handle. The quality of the tsukamaki directly affects the feel in the hand and is inseparable from operability and safety in iaido and kenjutsu. Therefore, understanding tsukamaki is indispensable knowledge for anyone who owns or uses a sword.

Main Materials: Characteristics and Selection of Silk, Cotton, and Leather

There are three main materials used for tsukamaki, each with its own applications and characteristics.

• Silk thread (genuine silk) is the most formal and is frequently used for display swords and restorations of antique pieces. Its distinctive luster is beautiful, and its soft feel imparts a refined finish. However, it has the drawback of being vulnerable to sweat and moisture, making it unsuitable for practical swords used in training. It was an essential material for samurai ceremonial swords and presentation swords to shoguns and daimyo. Colors were predominantly black, navy, and brown, chosen according to rank.
• Cotton thread has high practicality and excellent moisture-wicking properties, making it suitable for sweaty training and actual use. It is widely adopted in modern iaido swords and practice swords and is easy for beginners to handle due to its ease of maintenance. It is also more affordable than silk thread, allowing cost reduction when rewrapping. In recent years, advances in dyeing technology have made cotton thread with a luster close to silk thread widely available.
• Leather (tanned leather, deer leather, etc.) was frequently seen on practical swords during the Sengoku period and has high durability and resistance to rain and mud. Deer leather (shika-gawa) in particular has a good balance of flexibility and strength and was frequently used on warlords' battle swords. In modern times, it is often used for replicas and armor swords, and its distinctive rugged character is appealing. The aging process that makes it feel better to the hand with use is also favored by enthusiasts.

Types of Representative Wrapping Methods and Their Historical Background

While there are many school-specific wrapping methods for tsukamaki, the representative ones are introduced below.

• Morohine-ri maki (cross-twist wrap) is the most common wrapping method, in which the string is wrapped diagonally while crossing. The crossing of the string on both front and back creates a continuous diamond pattern, which is beautiful in appearance and provides excellent grip strength, making it widely used for both battle swords and display swords. It became widespread from the mid-Edo period onward and remains the most standard wrapping method in modern times.
• Katahineri maki (single-twist wrap) is a variation of the morohine-ri method where only one side is twisted. The finished line is softer, creating a somewhat decorative impression. This technique is often used on relatively small swords such as tanto and wakizashi.
• Asanoha maki (hemp leaf wrap) is a wrapping method that became popular during the Edo period, characterized by hexagonal geometric patterns reminiscent of hemp leaves. This is a highly difficult technique requiring precise spacing and careful management of string tension, and its finished beauty surpasses other wrapping methods. It was used for high-ranking sword fittings and presentation swords to shrines.
• Hira maki (flat wrap) is a method of wrapping string laid flat without any twist. It has a simple and calm impression and is frequently seen on wakizashi and tanto. Its unpretentious finish suits rugged practical swords and was frequently used on swords owned by commoners during the Edo period.
• Jabara maki (bellows wrap) is a type of decorative wrapping in which the string is wrapped in a wave-like folding pattern, creating large diamond patterns. Because it stands out, it is suitable for distinctive sword fittings and is seen on special swords such as warlords' command swords.

Structure of Tsukamaki and Craftsman Skill

A tsukamaki-shi (handle wrapper) does not merely wrap string but maintains uniform tension, gap spacing, and twist angle as work progresses. In professional work, craftsmanship carefully considers fine details such as leveraging the position of same-gawa grains (where the larger grains called oyatsubu are found near the center) to align the diamond pattern centers—such attention to detail determines quality.

If the string is tied too loosely, it will slacken during use and lose grip strength; conversely, if too tightly, it can warp the handle wood. The area around the kashira (pommel) and kiriha (ferrule) is particularly difficult to work, and considerable skill is needed in the technique of neatly concealing the string ends. Completing a single tsukamaki, from material selection to finishing, often takes several hours to more than half a day.

State Check and Self-Maintenance Practices

Tsukamaki is a consumable item. Over years of use and storage, loosening and damage may occur, but proper management can extend its lifespan.

Key points for state checking are as follows.

• First, check for any looseness or slack in the string, especially by pressing the area around the kashira and kiriha with your finger.
• Also carefully visually inspect for any fraying or partially cut areas in the string.
• For cotton string, discoloration (yellowing or darkening) is also a sign of deterioration.
• For leather wrapping, attention must be paid to cracking and peeling.
• If the diamond pattern is distorted, it is often a sign of overall looseness.

As daily maintenance, the basic practice after training is to wipe the entire handle with a dry cloth to remove sweat and moisture. Sweat is the greatest factor damaging the string fibers, and if left unchecked, the string can weaken in a matter of months. When not used for extended periods, store it with a desiccant such as silica gel to prevent moisture-related deterioration. Direct sunlight and high-temperature environments accelerate string fading and deterioration, so careful attention must be paid to storage location.

As temporary treatment for fraying, if the string end is only slightly loose, a small amount of water-soluble adhesive can be applied to fix it. However, fundamental looseness or significant fraying can only be resolved by rewrapping the entire handle, and in such cases, consultation with a sword specialist shop or tsukamaki-shi is strongly recommended. Attempting repairs in an arbitrary manner risks damaging the handle wood or same-gawa.

The Individuality and Era Told by Tsukamaki

Tsukamaki not only serves a function but also vividly reflects the purpose, era, and individuality of the sword's owner. Swords used by Sengoku warlords in battle featured leather wrapping prioritizing durability, ceremonial swords worn by daimyo during the peaceful Edo period featured lustrous silk morohine-ri maki, and modern iaido practitioners use cotton hira maki emphasizing operability—the optimal wrapping method has been chosen according to the era and purpose.

When observing the tsukamaki of existing masterpiece swords, the traces of rewrapping can sometimes reveal the succession of owners and changes over time. Among the national treasures and important cultural property swords housed in museums, some retain their Edo-period tsukamaki intact, testifying to the high level of craftsman skill of that era.

Learning about tsukamaki is also about touching the depths of sword history and Japanese aesthetic sensibility. By carefully observing the tsukamaki of your own sword and understanding the details of its materials, wrapping method, and finish, your dialogue with that sword will become richer. And continuing proper maintenance is also a responsibility to pass the sword on to the next generation.