[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 ...

Wikipedia describes Spirograph as a “geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids.” While that all ...

A model of the famous toy known as a spirograph. A circle of radius r (see blue circle below) is allowed to roll around the inside of a circle of radius R (see black circle below). We assume that the ...

This set, celebrating Spirograph’s 60th anniversary, features the first-ever electronic Spirograph. Kids can create thousands of designs by inserting the markers and pushing buttons to select the ...

Master LEGO builder [Yoshihito Isogawa] has been on a roll lately, cranking out a number of robots that make drawings reminiscent of the classic Spirograph toy. For instance, he built an elegant ...

These stunning patterns are art pieces created by spirographs. Spirograph, a geometric drawing device, creates mathematical roulette curves known technically as hypotrochoids and epitrochoids.