5. Katanas Were Not Folded Anywhere Close to a Thousand Times

The four metal bars of which katanas were made were heated at high temperatures, then hammered into a long bar that would become the blade. Contrary to myth, samurai blades were not folded thousands or even hundreds of times – that much folding would be counterproductive, and render the steel useless for a sword. Instead, katana blades were folded between eight to sixteen times.
When the sword was sharpened, the steel took a razor-sharp edge, while the softer iron prevented the blade from breaking. Well-crafted katanas became prized heirlooms, passed down generations of samurai families for centuries. Magnificent specimens of centuries-old katanas can be seen in the Tokugawa Art Museum in Nagoya, Japan.
Read More: 12 of History’s Deadliest Swords.



