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Perpetual calendar "Pillars" — image 1
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Perpetual calendar "Pillars"

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Perpetual calendar in a form of pillars. Can account for any month and even for leap years!

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Updated at source:

Model information

Category
Home Decor
License
Creative Commons — Attribution — Noncommercial

Designed it together with https://www.instagram.com/girl.with.needle/ as a gift.

The layout allows to account for any month and even leap years!

Update 2026-01-30

  • added a variant of a base for Sun-Sat weeks

Some pointers and quirks:

  • base should be printed lying on the face with text. Supports would be needed for the back wall, better space them out with occasional support blocker to ease removal.

  • as you can see from the photos, using dark filament for the base makes text hard to read.

  • random bumps and inconsistencies on the bottom of the base can make pillars a bit wobbly. I sanded the floor of the base a little to make it more consistent, but pillars are still not perfectly aligned.

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