Season 12, Episode 12 Escalators; Kevlar Canoes; Marble Cheddar; Disc Music Boxes

First Aired: March 25, 2009

Kevlar canoes; escalators.

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  • Premiered: October 11, 2004
  • Rating: TV-G
  • Premise: A series that shows how familiar objects used in everyday life are made. (more)

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