[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 ...

Some of our more senior experienced readers may remember a toy called the Spirograph. In case you don’t, it’s a geometric shape drawing toy. The way it works is a plastic disc with gear teeth ...

The Spirograph game was developed by Leeds engineer Denys Fisher in th early 1960s from his home studio in Scholes as part of his passion for mathematics and geometry. He first introduced his toy ...