In the last of a four-episode event we're calling SUPERSIZED, four smiths face a colossal challenge when they must forge giant hog splitters from 12 pounds of steel. Two smiths then head to their home forges to build one of the largest weapons in a Samurai's arsenal: the Japanese Greatsword. Which smith will go big and walk away with $10,000 and the title of Forged in Fire Champion?