דיסקברי: ככה עושים את זה — עונה 4

פרק 1

פרק 1 — Plastic Bottles and Jars, Mail, Eggs, Handcrafted Wooden Pens

04/01/2004

פרק 2

פרק 2 — Plastic Injection Moulds, Automotive Oil Filters, Filing Cabinets, Blown Glass

11/01/2004

פרק 3

פרק 3 — High-Precision Cutting Tools, Stained Glass, Semi-Trailers, Recorders

18/01/2004

פרק 4

פרק 4 — Conga Drums, Metal Plating, Buttons

25/01/2004

פרק 5

פרק 5 — Grinding Wheels, Compost, Window Blinds, Milk

01/02/2004

פרק 6

פרק 6 — Brushes and Push Brooms, Blackboards, Smoked Salmon, Zippers

08/02/2004

פרק 7

פרק 7 — 3D Commercial Signs, Hardwood Floors, Corrugated Polyethylene Pipe, Mattresses

15/02/2004

פרק 8

פרק 8 — Ceramic Tiles, Nuts, Steel Forgings, Skateboards

22/02/2004

פרק 9

פרק 9 — Car Engines, Flour, Recliners, Envelopes

29/02/2004

פרק 10

פרק 10 — Plastic Cups and Cutlery, Special Effects Makeup, Gold, Harps

07/03/2004

פרק 11

פרק 11 — Countertop Laminate, Frozen Treats, Children's Building Blocks, Detergents

14/03/2004

פרק 12

פרק 12 — Architectural Moldings, Pulleys, Industrial Rubber Hose, Sheet Vinyl Flooring

21/03/2004

פרק 13

פרק 13 — Putty Knives, Garage Doors, Electric Motors, Wool

28/03/2004