Season 12 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #10 of 13 in Season 12•−0.2 vs season avg
Linked steps, drive chains and safety systems are assembled into escalators, layers of Kevlar fabric and resin are molded into lightweight canoes, cultured goat milk is processed and aged into cheese, and pinned metal discs operate the mechanisms inside disc music boxes.

Lynne Adams
Narrator (voice)
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"Escalators, Kevlar Canoes, Goat Cheese, Disc Music Boxes" is episode 12 of How It's Made season 12. It scored 7.3/10 from 19 votes, ranking #10 of 13 episodes this season (season average 7.5). It aired on March 25, 2009.