NOT KNOWN FACTUAL STATEMENTS ABOUT KATANAS SWORDS

Japanese Edo interval wood block print (ca 1735) of a samurai by using a tachi and a wakizashi (or kodachi) The phrase katana to start with appears in Japanese in the Nihon Shoki of 720.Each kinds of tamahagane are now specifically where they have to be: the tough metal types the sword's outer shell and fatal blade, whilst the rough steel serves si