From pocket knives to wood chippers, see how these super sharp objects are made. Filet Knife - 00:00 - 05:07 Hedge Sheers - 05:07 - 10:13 Cartridge Blades - 10:13 - 15:20 Pocket Knives - 15:20 - 20:27 Utility Knives - 20:27 - 25:27 Pencil Sharpeners - 25:27 - 30:26 Chainsaw Mining Machine - 30:26 - Alternate Pocket Knives - 35:26 - 40:27 Wood Chippers - 40:27 - 45:25 Medieval Axes - 45:25 - 50:39