How It's Made Season 25 Episode 13 Traffic Signal Poles, Coffee Filters, Chainsaw Mining Machines ( Air Date 2015-07-02 ) Genre Documentary category. Overview "Metal tubes and structural sections are formed, welded, protected against corrosion and prepared to support traffic signals. Porous paper is formed, cut, pleated or crimped into disposable coffee filters, while heavy steel frames, drive systems and chains fitted with cutting teeth are assembled into machines that cut through rock and mineral deposits.".
How It's Made Season 25 Episode 13 Traffic Signal Poles, Coffee Filters, Chainsaw Mining Machines
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- Watch: How It's Made Season 25 Episode 13 Traffic Signal Poles, Coffee Filters, Chainsaw Mining Machines on CWR-CRB
- Stars: Lynne Adams
- Director: Yanick Legrand, Yan Savard, François Senécal-Tremblay, Linda Boyle, Lynn Herzeg, Gabriel Hoss, Gabriel Hoss
