This is a door magnet slider that simulates a solar eclipse by allowing the moon to slide in front of the sun.

There are two ways to make it:

1. Print the sun and moon images on the parts using black, gray, and white filament.
2. Print all of the parts in black, then print the sun and moon images on paper from the included PDF file and cut them out. The moon can be glued onto the slider, and the sun can be slid into the slot at the back or glued on.

It uses 8 mm x 1.8 mm magnets that snap fit into the holes when printed on my X1 Carbon. Your tolerances may be different.