Witness the reproduction of the 25th king of the Korean Joseon Dynasty‘s sword being made from scratch, starting with the building of a brick and clay forge for smelting the powdered iron mixed with sand. The smelting continues for 48 hours. After 60 hours, the oven is torn down to extract the melted metal. From there, the smithing begins. Sharpening and decorative engraving follows. The piece is finished with an elaborate hilt and sheath.The Swordmaker: A last Japanese swordsmith forges a sword. Plus: Dad teaches his daughter how to cast a ring from scrap pewter, Britain’s Longest-serving Blacksmith, and Primitive Technology’s Making a forge blower.