• empireOfLove@lemmy.one
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    1 year ago

    Hmm.

    I do quite a bit of parametric modelling and I see how something like this could be made. Find the angles of the sun at specific times, project planes at a fixed distance and angle matching around your cylinder, sketch the time number you want on each plane with a fixed pitch and then project-cut back through the cylinder. Would be a pain in the ass though. And a pretty tough 3d print without soluble supports, given all those tiny tiny interior walls and cavities.

    • cassetti@kbin.social
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      1 year ago

      Actually printed one on a Zortrax printer a few years back - not perfect, but came out pretty good.

      There are two different versions depending if you’re in the northern or southern hemisphere. It’s fun to show it to people and show how it changes if you rotate or adjust the pitch/angle of the sunddial.

      • empireOfLove@lemmy.one
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        1 year ago

        Is this available on thingiverse or something? I’d very much like to try my hand at printing it on some Prusa’s I have access to. But don’t think I’m up for that big of a parametric modelling challenge.

  • betterdeadthanreddit@lemmy.world
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    1 year ago

    That’s a cool project, it’d be interesting to see a time-lapse video through full daylight hours (with a couple extra frames at the intervals when the numbers are clearest).

      • Lemmy is Just Reddit 2.0@lemmy.world
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        1 year ago

        Oh wow, so you can adjust it a bit to account for some variables. That’s very cool.

        I wonder how it reckons for angle of the sun at different times of the year or different latitudes. Is it all adjusted by rotating the “gnomon” and would it be fairly accurate in Anchorage as it would be down in Miami?

        Man I should get into 3D printing.

        • xpinchx@lemmy.world
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          1 year ago

          It’s a maddening, yet somehow fun hobby. If you do it just remember it’s better to get a high quality small one vs a shit huge one.

          I started with a CR10 knockoff that was a fucking nightmare. Good for learning how they work, but an overall shit user experience. I upgraded to an Artillery Sidewinder X1 and all my headaches went away (for the most part)

          If you like tinkering it will be fun.