Cast Iron Cookware, Biodiesel, Clothes Hangers, Stone Wool Insulation

How It's Made – Season 16

Molten iron is poured into moulds, cleaned and finished to create durable cast iron cookware. Vegetable oil is chemically converted and purified into biodiesel, clothes hangers are shaped and assembled for strength and balance, and molten rock is spun into fibres before being compressed into fire-resistant stone wool insulation.