Have fun with this slim fidget ring! I uploaded many sizes (inner diameter in mm from 12.3mm for kids to 24mm for big fingers, please use the conversion table below in case you are used to your local ring sizes and use the closest value in millimeter). The STL filenames have the inner diameter in mm in the filename. For conversion of ring sizes, please use the “Ring size conversion table” at the end of this instructions page.
In case you need even more different sizes, please install OpenSCAD on your own computer and follow these instructions to customize your ring.
Thanks to kornon for the idea to slim down the original fidget ring!
If you could take a picture of an actual print, please “add a make” and attach the picture. - I am curious to see your uses in the wild! Please let me also know how you rate the design.
Unfortunately, the uber fidget ring was deleted due to a design claim, so its no longer available.
If you like it, you can check out the original print-in-place fidget ring:

or the dual fidget ring:

And the discrete (as in discontinuous/quantized) fidget ring:

And the discrete fidget ring - Mark II:


Please have a look at all my customizable creations.
There are more configurable-text-based creations, the meme picture frame,

the multi-line label, gadget display stand, sweeping name plate, bunting banner, customizable text box III, pyramid text, name plate, Customizable text box with lid and round text. Have also a look at my configurable pack of dogs, rabbits, reindeers and santas. There are also useful coat hangers and finger toys.
You can print it without any support, and it prints very fast.
Standard settings will be fine, like infill of 20%, layer height of .2mm, 2 perimeters.
You need good bed adhesion! In case your ring does not stick well during print, try the original fidget ring instead.
After printing, turn the ring a few times to make it spin better.
Ring size conversion table:
| Ring inner diameter in mm | USA Canada | United Kingdom | France | Germany |
| 14.0 mm | 3 | F | 44 | 14 |
| 14.4 mm | 3½ | G | 45¼ | 14½ |
| 14.8 mm | 4 | H½ | 46½ | 15 |
| 15.2 mm | 4½ | I½ | 47¾ | 15¼ |
| 15.6 mm | 5 | J½ | 49 | 15¾ |
| 16.0 mm | 5½ | L | 50¾ | 16 |
| 16.5 mm | 6 | M | 51½ | 16½ |
| 16.9 mm | 6½ | N | 52¾ | 17 |
| 17.3 mm | 7 | O | 54 | 17¼ |
| 17.7 mm | 7½ | P | 55¼ | 17¾ |
| 18.2 mm | 8 | Q | 56¾ | 18 |
| 18.6 mm | 8½ | Q½ | 58 | 18½ |
| 19.0 mm | 9 | R½ | 59¼ | 19 |
| 19.4 mm | 9½ | S½ | 60¾ | 19½ |
| 19.8 mm | 10 | T½ | 61¾ | 20 |
| 20.2 mm | 10½ | U½ | 62¾ | 20¼ |
| 20.6 mm | 11 | V½ | 64¼ | 20¾ |
| 21.0 mm | 11½ | W½ | 66 | 21 |
| 21.4 mm | 12 | Y | 67¼ | 21¼ |
| 21.8 mm | 12½ | Z | 68 | 21¾ |
| 22.2 mm | 13 | - | 69 | 22 |
| 22.6 mm | 13½ | - | - | - |
The author remixed this model.