The file 'Advent Christmas Present Ornament 3D Printer Model' is (stl) file type, size is 53.3KB.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/1V06wyHlaqE
See the full story on my YouTube Channel:
https://youtu.be/clrfA94Bxco
The segments fit snuggly into the slots to form the numbers. They can easily be removed and flipped over to disappear or appear depending on what color is showing. I printed this with Red and White, just pausing and swapping filament at the proper time. You could also just paint the lettering and one side of the segments.
advent_present_2.stl | 238.8KB | |
advent_segment_3.stl | 684.0B |