High Rise Window Cleaners, Jigsaw Puzzles, Field Hockey Sticks How Do They Do It? : Season 16 Episode 14
Discovery 51m
Aired: July 25th, 2019 @ 10:00 PM EST on Discovery
How do they keep the world's tallest twin towers clean? How do they make a jigsaw where every piece is unique? And, how do they craft Olympic level hockey sticks?
