The katana originated from the tachi long sword in the 15th century and was traditionally used by Japanese samurai from the end of the 14th century early Muromachi period, especially in combination daishÃ
Â, large-small with the short wakizashi shÃ
ÂtÃ
Â, short sword. It is very similar to the earlier Chinese Miao Dao and the swords of the North Japanese Ainu. A real Japanese blade makes the hardness zone Hamon and in Koshirae, which is usually covered with ray skin or also shark skin false ray leather and usually artistically wrapped with silk ribbon Tsuka, unique by a real forging or hardening technique Tsuka Carved hardwood or ivory handles were only available for decoration or presentation swords. A katana blade usually consists of at least two different types of steel, a ductile one for the core and a hard one for the cutting edge. Both components were initially individually ââ¬Årefinedââ¬Â by multiple folding and welding before they were forged together into a blade.
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