Way before there were plastic drawing toys like the Spirograph there were wood and metal drawing machines. Some were elegant harmonographs from the 1880s. Others were simple wooden epicycloid toys like The Marvelous Wondergraph from 1906. While the harmonographs were infinitely adjustable, all the cycloid toys were simple and limited. We resolved to correct this oversight by the long gone inventors. Our Cycloid Drawing Machine has infinite adjustments to allow for a fulcrum that rotates and moves. Gone are the simple rotary drawings of old. The Cycloid Drawing Machine allows for massively complex artwork. By allowing the fulcrum point to move and having a huge number of interchangeable gears our drawing machine is more like an engine turning lathe.
No motors. No electricity. Just crank it by hand. There are lots and lots of gears. They are held in place by brass screws and brass knurled nuts. You operate the machine by cranking the gears.