Original air date: February 5, 1994
Norm considers a historic example of the classic marble roll, as well as a huge mechanical version located at Boston’s Museum of Science. His own design emphasizes safety, proportioned for marbles too large for a child to swallow, while the entire unit is small enough to be portable. It is a relatively simple project, made primary on the table saw, that can often be constructed from workshop scraps.
Boston Museum of ScienceVisit Site
Purchase the Measured Drawing
You get all contents of the original plans in a multiple-page PDF document for easy viewing and printing.