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  • Oct 23, 2026, 12:33 PM

    The new moon ring gear looks mighty fine and is much more rigid! It makes one rev every 29.53 days and has 28 spaces for shiny moon phase indicators to be installed

    Large clockwork mechanism with a skeletal ring gear supported by gold gears
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Replies

  • Oct 23, 2026, 4:09 PM

    Mr Pythagoras grudgingly allowed a test print of the 12-piece zodiac ring.

    30 degree portion of an enormous ring gear that entirely fills the 3d printer plate. a little hangs off in places
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  • Oct 25, 2026, 2:22 PM

    Twelve prints later, the outer zodiac ring is complete and we can see how it looks in the dining room. Now I need to finish the constellations and find a globe, disco ball and sun.

    Large clockwork mechanism on a dining room table
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  • Oct 26, 2026, 4:39 PM

    Rendering with a support truss and the constellations hanging from the zodiac ring.

    clockwork mechanism with glowing consellations and a sun/earth/moon system
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  • Oct 28, 2026, 2:35 PM

    Test install of my geocentric orrery on our dining room ceiling. Still need spheres for the earth/moon/sun and to print ten more ecliptic constellation, as well as to wire the motor.

    Clockwork mechanism with two large ring gears spinning on a ceiling.
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  • Oct 23, 2026, 1:07 PM

    @th I've been watching this amazing & interesting thing come together in your posts...

    Obviously you're documenting the manufacturing challenges at the moment...

    But, from a position of cluelessness I've been wondering about the high level steps that allowed you to initially spec, design & build such a thing. Also what choices you made for your design and why.

    That feels like a rather ambitious question for a masto toot response! Wondered if you had (or intended) a blog on that? Or maybe there's a particular so_you_want_to_know_about_orrery.org I should go look at ?

    Whatevers, enjoying watching the process.

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