Season 4 Episodes13
Cast1

Lynn Herzeg
Narrator (voice)
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Ranked #2 of 13 in Season 4•+0.3 vs season avg
Hard industrial materials are shaped and sharpened into high-precision cutting tools, colored glass is cut and joined into stained-glass panels, structural components are assembled into semi-trailers, and wood or plastic is bored and finished to make recorders.

Lynn Herzeg
Narrator (voice)
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"High-Precision Cutting Tools, Stained Glass, Semi-Trailers, Recorders" is episode 3 of How It's Made season 4. It scored 7.8/10 from 33 votes, ranking #2 of 13 episodes this season (season average 7.5). It aired on January 18, 2004.