Season 12 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #5 of 13 in Season 12•+0.1 vs season avg
Metal housings, motors and hammer mechanisms are assembled into pneumatic impact wrenches, mineral-filled resin is molded and polished into cultured marble sinks, sliced plantains are fried and seasoned into chips, and specialized frames, engines and safety systems are assembled into NASCAR stock cars.

Lynne Adams
Narrator (voice)
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"Pneumatic Impact Wrenches, Cultured Marble Sinks, Plantain Chips, NASCAR Stock Cars" is episode 1 of How It's Made season 12. It scored 7.6/10 from 25 votes, ranking #5 of 13 episodes this season (season average 7.5). It aired on January 7, 2009.