The Massive Maguro Bocho

Four bladesmiths get cooking when they are tasked with forging a cleaver using only the steel from meat hooks. After two rounds of slicing and dicing, two smiths head back to their home forges to create the Maguro Bocho, a massive tuna knife. Which smith's blade will cut through the competition, netting them the Forged in Fire title and a check for $10,000?