If you’re a child of the ’80s or ’90s, chances are you’ve spent hours tracing out intricate patterns using the pens and gears of a Spirograph kit. Simple as those parts may be, they’re actually a very ...

Remember the Spirograph toys you had when you were a kid, which let you draw mathematically precise hypotrochoids and epitrochoids (or, as I called them, “neat shapes”) without cracking a sweat? What ...

When a British engineer named Denys Fisher introduced the first Spirograph set at a toy fair in 1965, he tapped into a demographic of non-artists who really wanted to create art. Those sprocketed ...