Karakuri Mechanical 3D Prints (youtube.com)

The algorithm presented me with one of these videos and now I’m binging on them. Each video presents an intricate mechanical 3d print.

Some of my favorites so far:

Mechanical 7 Segment Display https://youtu.be/r02oNu5t4Bs

Noodle cup timer https://youtu.be/qg9cYwPFyqs

Marble machine from a reel spring https://youtu.be/--qqFnPk3KM