How It's Made: Season 4
EP1 - Plastic Bottles and Jars, Mail, Eggs, Handcrafted Wooden Pens
EP2 - Plastic Injection Moulds, Automotive Oil Filters, Filing Cabinets, Blown Glass
EP3 - High-Precision Cutting Tools, Stained Glass, Semi-Trailers, Recorders
EP4 - Conga Drums, Metal Plating, Buttons
EP5 - Grinding Wheels, Compost, Window Blinds, Milk
EP6 - Brushes and Push Brooms, Blackboards, Smoked Salmon, Zippers
EP7 - 3D Commercial Signs, Hardwood Floors, Corrugated Polyethylene Pipe, Mattresses
EP8 - Ceramic Tiles, Nuts, Steel Forgings, Skateboards
EP9 - Car Engines, Flour, Recliners, Envelopes
EP10 - Plastic Cups and Cutlery, Special Effects Makeup, Gold, Harps
EP11 - Countertop Laminate, Frozen Treats, Children's Building Blocks, Detergents
EP12 - Architectural Moldings, Pulleys, Industrial Rubber Hose, Sheet Vinyl Flooring
EP13 - Putty Knives, Garage Doors, Electric Motors, Wool
