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In this manner, why are samurai swords so strong?
TraditionalJapanese katanas are famed for their incredible strengthandcutting ability. This is where the finished swords gottheirimmense strength, which would be tested numerous times toensurethe steel contained no imperfections.
Also, how is a Samurai sword made?
The swords are made using ahigh-qualitysteel known as tamahagane, which is repeatedly heated,hammeredflat and then folded. One is to eliminate anyblade-weakening airbubbles that get into the steel during theheating process. Also,the process creates layers in the metal,which adds to the blade'sstrength.
Trying to unsheathe a sword while inarmourwould be less awkward and faster if the blade faceddown. Thesamurai need only draw the katana by extendinghis armforward. In other words, even if the armour-cladsamurai useda katana (and not a Tachi), it would beworn with itscutting-edge down.