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How It's Made
Season 8 · Episode 4
Deep-Cycle Batteries, Tins, Optical Lenses
10.021mJanuary 23, 2007
Lead plates and electrolyte are assembled into rechargeable deep-cycle batteries, sheets of metal are formed and joined into decorative or storage tins, and precisely formulated glass is shaped, ground and polished into optical lenses.
Episodes
- Episode 1Photographs, Fur Tanning, Welding Electrodes, Electric Violins
- Episode 2Glass Bottles, Hacksaws, Ice Hockey Goalie Masks
- Episode 3Lacrosse Sticks, Frozen Fish Products, Flashlights, Paintbrushes
- Episode 4Deep-Cycle Batteries, Tins, Optical Lenses
- Episode 5Horseshoes, Dishwashers, Graphite Fly Rods, Frozen Pizzas
- Episode 6Pistons, Paint Rollers, Parachutes, Chimneys
- Episode 7CO2 Cartridges, Pretzels, Scissor Lifts, Skating Rinks
- Episode 8