The Zweihander Forged in Fire : Season 3 Episode 12

Four competitors must forge weld blades for friction folders from tiny cubes of steel. After hammering through the testing, two smiths will return home where they will forge a German Zweihander. Due to its long length and use on the battlefield, they take their Zweihanders outside the forge to be tested, where only one will be crowned Forged in Fire Champion.