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Curved swords are more effective when cutting and slashing while straight swords excel in thrusting. There are actually many swords from different regions of the world that are curved.

It's also because of the forging process: the metalulgy behing the katana means that the blade and the blunt are two differant density steels so when the weapon is immersed in water after the heat of the forge the blunt shrinks whilst the blade doesn't thus creating a curve.

The curved blade of the samurai sword helps in sliding the sword with proper angle. This curve comes from the process of differential quenching. Also the smith coats the blade with several layers of a wet clay slurry.

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10y ago

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