Tamahagane: The Ancient Steel of Japan's Forbidden Katanas ????️ #incredibleskills #amazingskills - Video

This ancient Japanese steel created a weapon so feared that it was banned from production after WWII by the Allied forces.
This steel has been made the exact same way since the 6th century, and here’s why.
Watch as craftsmen construct a clay furnace called a tatara, capable of reaching a scorching 1,500 degrees Celsius.
But here’s the fascinating part—unlike other countries rich in iron ore, Japan’s iron comes from iron sand, painstakingly collected from rivers and seashores. Craftsmen layer this sand with charcoal, and over an intense 72-hour process, refine it into a rare steel called tamahagane.
And what’s truly incredible? This precious steel is the only material used to forge the legendary katanas.