Making Japanese Swords from Iron Sand
making | science | swords | veritasium | weapons
Japanese swordsmiths have been making bladed weapons for centuries. Veritasium offers a scientific explanation of the process, starting with a charcoal smelting method that produces steel from tiny deposits of iron sand collected from riverbeds. After that, a swordsmith forges, folds, and welds different kinds of steel to create a beautiful and sharp blade.
