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Katana "Tsuru" (鶴 Japanese crane), Kobuse forge, selective tempering #Terressens

Katana "Tsuru" (鶴 Japanese crane), Kobuse forge, selective tempering

Sharp katana, Kobuse forge (steels 1045 / 1095), genuine hardening line (hamon 刃文), hand sharpening, with black scabbard (saya 鞘), koiguchi (鯉口), Kurigata (栗形) and Kojiri (鐺) in natural horn, delivered in a composite wood case containing a maintenance kit, lacquered stand and fabric protective cover


A work of art and a formidable weapon, I am all of these things. My blade is forged from two steels, the first "softer" at the core, the second "extra-hard" on the surface. Combined with selective tempering, whose misty pattern decorates the edge of my blade, this allows me to claim exceptional characteristics. Supple yet highly resistant, I'm destined for the exceptional. Sober, my black frame features two mythical animals, Japanese cranes. Cut from my tsuba (鍔 guard), they symbolize longevity, good fortune and fidelity. Indeed, the Japanese crane chooses a partner for life. It is also a symbol of spiritual progress, enabling everyone to move to a higher level of spirituality.

Reference n° 0572 - Shipped within 48 hours
857 € (free shipping)

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Director: Thibault Alignan, thibault.alignan@gmail.com

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Katana "Tsuru" (鶴 Japanese crane), Kobuse forge, selective tempering #Terressens

Metallurgy

Japanese sword metallurgy (choosing the right katana, 1ʳᵉ part) | Magazine #Terressens

Magazine #Terressens

Japanese sword metallurgy (choosing the right katana, 1ʳᵉ part)

Various criteria can play a part in the choice of a katana (刀). Its use in martial or sporting practice, as well as the level of the practitioner, influence it considerably. Its weight, point of balance, construction (materials and mechanical characteristics) are all criteria to be taken into consideration when choosing your Japanese sword or Shinken (真剣, contemporary katana).

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History & symbols

Dance of Japanese cranes (Grus japonensis), symbol of longevity in Japan (photo: cyberfox Japan, Creative Commons)

The Japanese crane (Tsuru 鶴)

In Japan, the crane is a symbol of longevity. Legend has it that it lives to be 1,000 years old. This animal is present in iconography (as a motif on Japanese kimonos, fabrics and papers) and folklore. The tale "Tsuru no Ongaeshi" (鶴の恩返し), for example, tells of a crane rewarding an elderly couple by weaving marvelous fabrics with its feathers. The crane thus has a reputation for granting favors.

In origami, cranes are particularly appreciated. The legend of the 1000 cranes (Senbazuru or Zenbazuru 千羽鶴, せんばづる) claims that if you make 1000 origami cranes in a year, held together by a tie, you'll have your wishes fulfilled (for yourself or someone else). For the wish to come true, you have to make each crane, saying a prayer when it's finished.

Technical

Manufacturing
. Kobuse forged throat blade: 1045 steel core and 1095 (extra-hard) sharpened surface (perfectly suited to cutting practice)
. Hand sharpening
. True hardening line (刃文 Hamon; selective hardening)
. Through silk (end 5 cm from kashira 頭) .
. Mounted with two pegs (Mekugi 目釘) .
. Handle (tsuka 柄): shagreen (Same 鮫肌, ray skin) covered with black cotton ito.
. Guard (tsuba 鍔): cast steel with black surface treatment (motif: Japanese cranes)
. Scabbard (saya 鞘): varnished wood.
. Koiguchi (鯉口), Kurigata (栗形) and Kojiri (鐺) : natural black horn .

Features
. Blade length (nagasa 長さ): 70 cm (balance point 13 cm from tsuba)
. Curvature (Sori 反り): 19 mm / Torii-Sori (symmetrical)
. Thickness (Kassane): 7.2 / 5 mm
. Total length: 101 cm
. Tsuba: ø 8 cm
. Tsuka: 26.5 cm
Back of blade (mune): Hikushi . Mune (棟) : Hikushi

Weight (approx.) :
. Katana : 980 g
. Saya : 240 g

Packaging
Composite wood box (9 x 15 x 110 cm) containing maintenance kit, lacquered stand (one place) and protective fabric cover.

Maintenance
Blade protection: clean blade and apply a film of oil regularly to prevent oxidation (rust).
Maintenance to be carried out after each cutting training session or monthly without use (see below).

Core steel: 1045
Steel on wire: 1095
Surface steel: 1095
Forge: Kobuse
Hardening: differential
Sharpening: manual

📌 Also read: katana metallurgy glossary

Maintenance kit

Maintenance kit for katana (shinken) blade #Terressens

Maintenance of a sword or saber is necessary to prevent oxidation (rust). Old oil must be removed and replaced by a film of new oil. The maintenance kit is composed of several elements:
Microfiber cloth: for cleaning, spreading oil and polishing the blade.
Uchiko: a ball of finely ground chalk (chalk powder) wrapped in a ball of cloth. Intended for cleaning the blade's surface, the powder passes through the wrapping when tapped, allowing it to be sprinkled over the blade's steel.
Oil: applied as a thin film, it protects against oxidation.
Mukugi(x 2): pins (bamboo dowels 目釘) that hold the blade and handle (tsuka 柄) together.
Pin driver (Mekugi Nuki): Small brass hammer with a screwed-in pin for removing mekugi.
Maintenance does not require disassembly, but if you need to remove the handle (tsuka 柄), replace the pins.

Figure 1: Cleaning the blade with a microfiber cloth
Figure 2: Tapping the Uchiko on the blade to deposit limestone powder
Handle with care to avoid injury.
1/ Use the microfiber cloth to remove oil from the blade. From the guard (Tsuba 鍔) to the tip (Kissaki 切先), slide the cleaning cloth over the back of the blade (Mune 棟), folding it in half to wrap both sides of the blade.
Lightly squeeze the cloth between thumb and forefinger to surround the blade from above (first illustration).
2/ Once the old oil has been removed, use the uchiko to lightly tap along the blade (second illustration).
3/ Use the cloth to lightly polish the blade and remove the powder, in the same direction as the first step (first illustration).
4/ Apply the oil along each side of the blade with the sprayer (or a very soft brush). The oil should be spread thinly and evenly, without excess (first illustration).
Be sure not to touch the blade before replacing it in its sheath (saya 鞘).
Clean the microfiber cloth with soapy water.

Legislation

Since September 6, 2013, new legal provisions stemming from the March 6, 2012 law have come into force. These new rules have strengthened criminal penalties against weapons offenders and introduced a new classification.
Katanas, swords, daggers and knives are now classified in category D. The purchase and possession of these weapons are unrestricted. In principle, they may not be carried or transported without legitimate reason. If transported, the weapon must not be "directly" usable. It must be securely packed in a case or container, preferably with a padlock or other protective system.
To find out more: Code de la sécurité intérieure on Legifrance

The sale of war materiel, weapons, ammunition and their components to minors is prohibited. Please remember to provide us with proof of your majority (identity card, passport) by e-mail to validate your order: studio@terressens.com. If we do not receive this document within 48 hours, your order will be cancelled and reimbursed in full.

To find out more, read our practical information sheet: "Is it legal to own a katana?

Customer reviews


Customer reviews #Terressens received by SMS
CC (February 2022)
Magnifique. Very happy. Merci bien!

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