This is a spacer that acts as a light pipe and diffuses the light coming from the individual LEDs to make them blend together if you prefer a solid look to the individual segments.
For best results, print with the internal faces white but paint or print the rest black to reduce light leakage.
Reference:
https://www.kickstarter.com/projects/etap/espixel-clock
Direct link to the original creator's page
thingiverse
cults3d
prusaprinters
thingiverse
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, this model is available as a free download on thingiverse. Some creators accept tips or donations.
Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.