4. Deep Cycle Batteries, Tins, Optical Lenses (2007)
This episode demonstrates the production processes for deep-cycle batteries, tins and optical lenses, and shows how each is made.
Release date: 2007-01-23
Season number: 8
Episode number: 4
Runtime: 21 minutes
Rest of the cast - click here to expand
Brooks T. Moore - Narrator (voice)