D20 Spin down Parametric

This is a simple spindown D20 model designed for anyone who wants to print and use their own dice. I got tired of paying $2 for a spindown die at my local game store, so I created this version instead.

What makes this spindown die unique is the way the numbers flow from 20 down to 1. I custom-placed the numbers so that it's intuitive for the user to rotate the die smoothly in descending order.

The included D20 comes with an editable model, allowing users to modify the size, font, or graphics to suit their preferences. 

To do this with Makerworld, navigate to the model page on your PC or Mac and select the model.
From here select the customise option shown in the image below 

Then in the customise section adjust one of the 3 parameters to change the dice size as shown in the picture below. 

Now simply download and print the file.

To modify the file in Fusion 360, download the .f3d file and open it in Fusion 360.
To change the die size, go to Solid → Modify dropdown → Change Parameters. Then, adjust the value of Triangle_size—modifying this will scale the overall size of the die.

To adjust the font size, go again to Solid → Modify dropdown → Change Parameters, and modify the expression value for Character_size. You can also change Number_depth to adjust the depth of the embossed numbers.
Note: Be sure to keep this value negative to avoid print issues.

If you’d like to customize the font, adjust rotation, or add a custom SVG to a face of the die, all relevant sketches are clearly labelled under the Browser section in Fusion 360.

Enjoy!

Updates:

01-Jul-25 - Bambu Release their integration with f3d files and this allows users to updated the parametric model directly through makerworld! Cool! Updated a new f3d file that contains favorited parameters so that users can edit.

16-Jun-25 - Fixed gramma, spelling and sentence structure. 

Update model to include only 1 dice as multiples can be easily done through app.

Updated profiles to only include textured plate as users can now easily select their preferred build surface in app.

Finally added a better photo to the cover.