Season 8 Episodes13
Cast1

Lynne Adams
Narrator (voice)
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Ranked #1 of 13 in Season 8•+0.3 vs season avg
Small steel cylinders are formed, tested and filled with compressed carbon dioxide, shaped dough is boiled and baked into pretzels, hydraulic systems and crossed supports are assembled into scissor lifts, and layered refrigeration systems create and maintain artificial skating-rink ice.

Lynne Adams
Narrator (voice)
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"CO2 Cartridges, Pretzels, Scissor Lifts, Skating Rinks" is episode 7 of How It's Made season 8. It scored 7.8/10 from 21 votes, ranking #1 of 13 episodes this season (season average 7.5). It aired on February 20, 2007.