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＜外部リンク＞
本文
Procedure of making Japanese sword
The lump of Tamahagane is heated, and hammered into flat sheets.
Small pieces was divided hard and pure steel and soft steel.
Piled it together on the base made from homogeneous steel.
The charcoal is heated until about 1300 degrees Celsius, and it was shut together.
Be made a cut in and fold back repeatedly. (Orikaesikitae)
Cut in rectangles and pile the steel exactly on the fulcrum.(hyoushikizukuri)
Forge the piled steel as hyoushikizukuri.(shiagekitae)
The soft steel, Shingane, which become a center core, is wrapped by hard steel, Kawagane. Put it in fire and lengthen it
Arrange the shape of the steel lengthened enough and then make it exact shape of Japanese sword by small hammer. While this process, Kissaki is hammered out.
Arrange the shape of the forged steel by tool like a plane, Sen, and file.
Heat the sword body, and then quench it in the water tank.
In the water, the sword body begins to warp to make Sori automatically. (Yakiire)
After check the Sori, and rough polishing, the Swordsmith entrusts it to the polisher.
＜外部リンク＞
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