D20 Countdown die (dice holder) 3D printable model by kittka

D20 Countdown die (dice holder)

Source: Thingiverse by kittka

The D20 Countdown die (dice holder) is a free printable 3D model from Thingiverse by kittka. Wanted a nice countdown die for playing magic, one that was really visible. You can download the STL file from the original listing below and print it at home.

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6,131 saves Source: Thingiverse Updated 2026-09-06

Tags: D20, Countdown, die, (dice, holder)

About this model

Wanted a nice countdown die for playing magic, one that was really visible. Figured, might as well use the inside to house actual dice. Measures 3" between parallel faces, and uses 10 1/4" diameter, 1/16" deep magnets to close the box. I liked the one at but I wanted arabic numerals in a countdown direction (countdown dice have consecutive numbers next to each other to help in tracking life points, rather than random number generation.) Largehole files have a slightly larger counterbore to offset overextruding so the magnets fit better. BTW, I used a soldering iron to melt the magnets in -- don't do this -- the heat seems to kill the strength of the neodymium magnet. d20closed_flat is just a large d20 countdown die.

Frequently asked questions

Is this 3D model free to download?
Yes. D20 Countdown die (dice holder) is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?
The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by kittka.
Who made this model?
Designed by kittka, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?
Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.

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