Season 31 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #4 of 13 in Season 31•+0.2 vs season avg
Precision gears, spools and drag mechanisms are assembled into fishing reels; donated plasma is separated and purified to recover proteins used in medical therapies; moulded cups receive graphics designed to create a three-dimensional effect; and formed stainless-steel sections are welded and pressure-tested as beer kegs.

Lynne Adams
Narrator (voice)
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"Spinning Reels, Plasma Protein Therapies, 3D Cups, Stainless Steel Beer Kegs" is episode 3 of How It's Made season 31. It scored 7.8/10 from 12 votes, ranking #4 of 13 episodes this season (season average 7.6). It aired on May 12, 2018.