## How do Spirographs work?

In a spirograph set, each circle is numbered according to the number of teeth it has on its circumference. As it turns out, there are 30 teeth for each millimeter of the radius. Notice that the ratio of radii will be the same as the ratio of number of teeth. The figures are labeled according to the number of teeth.

## What pens do you use with Spirograph?

Crayola Fine Line Markers.

**What is a Spirograph Machine?**

Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. The well-known toy version was developed by British engineer Denys Fisher and first sold in 1965.

**What is Spirograph Putty?**

“Spiro-Putty” is basically poster putty, a.k.a. Blu-tack, a white (or blue, if you have Blu-tack) sticky putty that holds down your Spirograph ring (or whatever you’re using for the stationary piece) while you draw your design.

### What type of simple machine is a Spirograph?

Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids.

### Do gel pens work with Spirograph?

These pens aren’t just wonderful for spirograph; you can use them to write invitations, for coloring, and for work. If you are looking for a gel pen for coloring in with and for coloring books, then this might not be for you as the tips are very fine.

**What is a human Spirograph?**

Performance artist Tony Orrico is known as “The Human Spirograph” due to the recurring geometry featured in his works. He creates many of his pieces by lying on the floor and making repetitive gestures with his arms as he rotates his body. His technique results in a perfect balance of symmetry and human imperfection.

**What are Spirograph shapes called?**

The Spirograph is a geometric drawing toy that produces mathematical curves known as hypotrochoids and epitrochoids.