Trochoid Gear 1
Trochoid Gears: the curve traced out by a fixed point on one curve as it rolls without slipping on a second curve.
Still in progress
Source idea [url]https://www.desmos.com/calculator/g9ezbvh9a7[/url]
Alt idea: [url]https://www.desmos.com/calculator/1ujrywxkee[/url]