How It's Made

Season 6 Episode 2: Springs, Pavers, Pianos, Rotary Cannons

Steel wire is shaped and heat-treated into springs, concrete mixtures are molded into paving stones, thousands of specialized components are assembled and tuned to make pianos, and precision-machined barrels and mechanisms are combined into rotary cannons.

Genre:

Documentary

Seasons:

32

Episodes:

416

Cast:

Lynne Adams

Quality:

HD

Duration:

21 min

First Air:

2001

Rating:

7.7