Poster of Cast and Crew in How Do They Do It? - Season 12 - Episode 8 - Harp Strings, Roof Windows, Belgian Waffles

How Do They Do It? - Season 12 - Harp Strings, Roof Windows, Belgian Waffles (Episode 8)

Plot: Making the world's finest harp strings; Building roof windows that can keep out a hurricane; Making Belgian waffles.
Episode Aired On:
Friday, July 3 2015
9 years ago