You have to check out the wondrous machine called the Cyclic Harmonograph. Built by Peter Dalton, this hand-powered wooden machine uses a pulley system to create incredible circular interloping designs on paper. The Cyclic Harmonograph is a bit like a spirograph but it’s much larger and it uses pulleys instead of gears. The designs can be changed by five principle variables, such as changing the ratios between drawing arm and the paper, the rate of the movement of the drawing arm, and more. You can also change the paper and the pens to get different effects. But it’s not all about the pretty pictures. The machine is a wonder of mechanics. You can learn a lot about how rotary motion converts into lateral motion and much more.
The first Cyclic Harmonograph came about several years ago when Peter decided to try to put it together as a proof of concept. And it worked! Last year, his neighbor Katherine Edwards remembered the device as a kid and asked him to make one for a Tedx conference at University of Michigan. They collaborated and he built a larger Cyclic Harmonograph. It was a hit! Peter also showcases the machine on special days at the school where he works as a substitute teacher.
When I asked Peter what he wanted people to get out of his Cyclic Harmonograph, he told me that he wants you to know that you can take an idea, put it down on paper as a rough sketch, and figure a way to actually make it. It’s important to continue that process of discovery. Peter also advises that kids watch their family and friends to learn new things, like woodworking and sewing. So come on by to see the marriage of art and mechanics in the Cyclic Harmonograph and get your own design made before your very eyes!