[Tuchman] starts with a quick proof-of-concept using an actual plastic Spirograph toy to make sure it isn’t a totally unworkable idea. Unsurprisingly, the plastic is too flexible to give a ...

This set includes nine classic Spirograph pieces, two pairs of 3D glasses, three fine-line pens, two 3D sticker sheets, a 3D graph pad, a 3D pattern pad, 10 classic design sheets and a classic ...

At first glance the monicker “spirograph” seems wrong, because where are the gears? However, [Yoshihito] has them stashed underneath the sheet of paper, with magnets controlling the pens.

A basic spirograph set includes plastic rings (stators) with gear teeth on the inside and outside. Gearwheels (rotors), also with teeth and holes for pens, are spun around the rings to create ...