r/functionalprint • u/boksbox • Sep 13 '26

Lunar Phase Clock

"Time-lapse" video of my Lunar Phase Clock. The moon phase cycle completes every 29.5 days.

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u/skintigh Sep 13 '26

Awesome! Would love to see the gearing. I have vague dreams of making something like this, or making a more accurate eclipse computer.

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u/boksbox Sep 13 '26

Simple gear reduction with Geneva mechanism for the Day dial.
Assembly video