Season 7 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #10 of 13 in Season 7•−0.2 vs season avg
Molten metal is cast and machined into automobile engine blocks, layers of flavored sugar are built up to make jawbreakers, laminated wood is formed into drum shells, and shells, hardware and drumheads are assembled into finished drums.

Lynne Adams
Narrator (voice)
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"Engine Blocks, Jawbreakers, Drum Shells, Drums" is episode 2 of How It's Made season 7. It scored 7.6/10 from 26 votes, ranking #10 of 13 episodes this season (season average 7.8). It aired on September 12, 2006.