How It's Made (2001– )
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Bronze Bells/Wooden Airplane Propellers/Charcoal Briquettes/Gas Log Fireplaces 

Find out how bronze bells, wooden airplane propellers, charcoal briquettes and gas log fireplaces are made.

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Episode credited cast:
Zac Fine ...
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Storyline

Traditionally, bells are cast from bronze, a metal known for its durability and its melodic sound. After choosing a pattern, the process begins with the making of a high-quality mould with the use of a fine silica sand and epoxy mixture. Next, we learn about the concept of the helical screw, an invention by Leonardo Da Vinci which dates back to 1493 and it was designed to propel a machine vertically into the sky. Usually, a wooden propeller starts out as a piece of a laminated block of maple wood which consists of 36 to 48 layers, each less than 1/16 of an inch thick. As the show continues, we discover that in the 1920s, automobile manufacturer Henry Ford decided to recycle wood scraps from making cars into barbecue briquettes. The production of a typical charcoal briquette begins with sawdust and wood chips from lumber mills. In the end, we follow the various steps in the making of a gas log fireplace, a process that begins with the fitting of a gas-control valve and a gas pilot to a... Written by Nick Riganas

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Genres:

Documentary

Certificate:

TV-G
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Release Date:

15 February 2008 (USA)  »

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