Season 15 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #12 of 13 in Season 15•−0.2 vs season avg
Recycled steel is melted, cast and rolled into long sections of train rail before being straightened and inspected. Seawater passes through filtration and high-pressure membrane systems to become drinking water; lightweight tubing is shaped around an athlete’s measurements to build a racing wheelchair; and precisely

Lynne Adams
Narrator (voice)
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"Train Rails, Desalinated Water, Racing Wheelchairs, Parquetry" is episode 3 of How It's Made season 15. It scored 7.3/10 from 22 votes, ranking #12 of 13 episodes this season (season average 7.5). It aired on April 9, 2010.