Drawing Tricks on Graph Paper | Easy 3D Paper Illusions

A Spirograph is a geometric drawing device that produces intricate, looping patterns known as hypotrochoids and epitrochoids. It typically consists of a set of plastic gears—one ring with teeth on the inside or outside and smaller gear-like wheels that fit inside or around it. By placing a pen through a hole in one of the smaller wheels and rotating it along the fixed ring, users can create mesmerizing curves and symmetrical designs. Originally introduced as a mathematical toy in the 1960s, the