moon phase clock

pinshape

It's a straightforward moon phase clock. I've made it using a simple quartz clock as its core mechanism. You'll need: * A simple quartz clock (and a battery) * All the 3D printed parts * Maybe some glue to secure the top part The gears: I've used eight gears, labeled from A to H. A represents the hour component of the clock and H features two moons. A reduction ratio of 4x29.53 equals 118.12:1 is required. With a bit of calculation and an ugly script, I chose the following gear sizes: * A=12 * B=68 * C=30 * D=37 * E=23 * F=49 * G=15 * H=119 You can verify the ratio on this webpage.