The Cycloid Drawing Machine, A Device That Uses Wooden Gears to Create Elaborate and Beautiful Designs
by Glen Tickle from Laughing Squid on (#17303)
The Cycloid Drawing Machine by Joe Freedman is a device similar to a Spirograph toy made using adjustable and interchangeable wooden gears that can be used to create elaborate and beautiful designs on paper.
A video review of the Cycloid by Wayne Schmidt shows a number of configurations in action as different gears are swapped out.
photos via LEAFdisplay
via Ufunk