Topic summary
Swordsmith

Extracted from the Wikipedia article Bladesmith.
Chinese
The swordsmiths of China are often credited with the forging technology that was carried to Korea and Japan, allowing swordsmiths in those places to create such weapons as the katana. This technology included folding, inserting alloys, and differential hardening of the edge, which historically has been the most common technique around the world. While the Japanese would be more influenced by the Chinese dāo (single-edged swords of various forms), the early Japanese swords known as ken are often based on the jian. One-sided jians from the Tang dynasty provided the basis for various Japanese forging styles and techniques. The Korean version of the jian is known as the geom or gum, and these swords often preserve features found in Ming-era jian, such as openwork pommels and sharply angled tips.