Season 13 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #1 of 13 in Season 13•+0.3 vs season avg
Blades and folding implements are assembled into Swiss Army knives, paper rolls are perforated to control player pianos, large steel sections and storage tanks are assembled into oil tankers, and lightweight metal is formed and finished into racing wheels.

Lynne Adams
Narrator (voice)
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"Swiss Army Knives, Player Piano Rolls, Oil Tankers, Racing Wheels" is episode 3 of How It's Made season 13. It scored 7.8/10 from 26 votes, ranking #1 of 13 episodes this season (season average 7.5). It aired on May 8, 2009.