![]() Tamahagane is the type of steel that Japanese swordsmiths used to create swords. However, swordsmiths used specific materials to ensure the sharpness of the Katana. Technically, claims state that the Obsidian still has the sharpest edge. ![]() The result of this procedure produces a blade with a serious edge while the entire blade is kept flexible. It will then be heated to about 750-degrees Celsius then quenched in water to cool the edge faster. You’d need thick layers on the spine and thin layers on its cutting edge. The practice consists of covering the blade in a layer of clay. An additionally flexible jacket should also surround it.Ĭlay and differential hardening is where the concept of a soft spine and hard edge enters. With that, the general principle of the procedure is to produce a blade with a hard edge. The melding produces a blade for holding a sharp edge without it snapping. All these have one thing in common, and that’s taking steel billets of different hardness then fusing them. These include the most simple form, Kobuse, Sanmai, and Shoshu Kitae for the most complicated. Lamination contributes to the vital physical aspects of a Katana, and there are different ways of doing it. ![]() This process produced the Tamahagane or jewel steel. It took 72 hours to complete the purification technique, and they did this in a specially-made furnace, the Tatara. But due to the innovative skill of swordsmiths, they utilized various slabs of impure iron then purified them using flame. In ancient Japan, quality of iron ore wasn’t that good. Yet despite the drop in the number of folds, it’s still able to create impressive numbers of layers, often reaching over 32,000. ![]() These include folding, laminating, and differential hardening, which are challenging tasks that require thorough and proper craftsmanship to create a perfect Katana.ĭo take note that the method of folding a Katana does not take a thousand times. ![]()
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