Season 4 Episodes13
Cast1

Lynn Herzeg
Narrator (voice)
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Ranked #8 of 13 in Season 4•matches the season avg
Abrasive grains and bonding materials are pressed and fired into grinding wheels, organic waste is decomposed and processed into compost, slats and operating mechanisms are assembled into window blinds, and raw milk is tested, pasteurized and packaged.

Lynn Herzeg
Narrator (voice)
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"Grinding Wheels, Compost, Window Blinds, Milk" is episode 5 of How It's Made season 4. It scored 7.5/10 from 32 votes, ranking #8 of 13 episodes this season (season average 7.5). It aired on February 1, 2004.