The steel manufacture technology was introduced from China about the 5th century, and accomplished original development in Japan.
As for the Japanese sword, because Japan was poor in the amount of the ore production, the iron-rich sand is made as a raw material.
A lot of technologies established by the contemporary science such as "Super-steel", "Heat-treatment", "Carburizing", and "Removal of impurities" are included in a complex manufacturing process of the Japanese sword, and it is known as a symbol of an over technology.
The feature of the Japanese sword is light in weight though has both "Sharpness" and "Durability". Because it is not possible to mass-produce, and the pattern of the blade is different one by one, the Japanese sword established high reputation as a work of art.
A big feature of the Japanese sword is in "Tamahagane" and "Orikaeshi Tanren". "Tamahagane" of the raw material is made from the iron-rich sand by "Tatara iron making method".
This method is not inferior compared with a present steelmaking process. Moreover, the steel material of fine quality that impurities are few and purity is extremely high can be obtained.
"Orikaeshi Tanren" is a process of doing blend and the smith welding of four kinds of iron. The blend is done many times, and "Steel with soft body part" and "Hard steel for the cutting portion" are finished up in steel with layer structure more than 30,000 by the wordsmith. This is secret of sharpness and durability.
The swordsmith hardens it at the end. The pattern of a beautiful blade is made by putting mud on the body to keep in elastic steel, and by exposing only the blade part in water it hardens partially.
The temperature of the hardening is a secret of jealously-guarded. This manufacturing method forms the feature of the Japanese sword that is "The tip of the blade has hardness, and the body is elastic".
Japanese swords are called "Samurai's Soul". Samurais always carried about swords that a private family crest was carved, and used to put them on the bedside when sleeping.
BUTOH series ( meaning of "Samurai sword" ) faithfully reproduced sharpness and durability by using the steel material of Hitachi Metals established by the same manufacturing method as the Japanese sword. Moreover, the family crest of the general with an especially high popularity in Japan was carved by the gold work. We guarantee that BUTOH becomes your favorite one as beauty scissors that express beautician's soul.
KAMON (家紋) is Japanese emblems used to decorate and identify an individual or family.
There are no set rules in the design of KAMON. It most commonly consists of a roundel encircling a figure of plant, animal, man-made, natural or celestial objects, all abstracted to various degrees. Religious symbols, geometric shapes were commonly used as well. It is world-renowned examples of the beauty of Japanese design.
Especially in Sengoku Era, Japanese warloads (SAMURAI) willingly marked KAMON to their armor and Japanese sword, and headed for the battlefield.
KAMON was a symbol of bravery and honor of the clan for SAMURAI warriors.