Wooden celestial mechanical calendar and orrery. 5:11 video:
https://www.youtube.com/watch?v=QMX1syA6R84
https://s3-us-west-1.amazonaws.com/h...and_orrery.jpg
More: Wooden Gear Clock Plans from Hawaii by Clayton Boyer
Previously:
https://www.homemadetools.net/forum/...713#post102271
https://www.homemadetools.net/forum/...2674#post76760
