How Do They Do It?

Season 12 Episode 8: Harp Strings, Roof Windows, Belgian Waffles

Making the world's finest harp strings; Building roof windows that can keep out a hurricane; Making Belgian waffles.

Genre:

Documentary

Seasons:

17

Episodes:

287

Cast:

Quality:

HD

Duration:

22 min

First Air:

2006

Rating:

7.5