Oura Sizing Rings

These models come straight from Oura, and I'm surprised they weren't here already. It's not that publicized I guess. I recommend printing and using this only if your printer is somewhat dimensionally accurate, since any inaccuracies will be reflected in discomfort when and if you get the actual ring from Oura. When wearing them the bumps are supposed to be on the underside of your finger. 

I printed mine with a .6 mm nozzle at .2 layer height and they came out pretty good, if only .3 mm bigger in one dimension. The STLs are as they were given by Oura but I recommend rotating them 90° to lay them flat.

The following text is straight from their documentation of the files:

This project includes 8 .stl files that reflect the 8 available ring sizes for the new Oura ring. Use the files to print ring sizers to find out your size.

RECOMMENDATIONS

1. Use high-quality material. The inner molding of the new Oura ring is smooth and non-allergenic. If you use a low-quality material, the ring sizers may feel too tight because of the extra friction.
2. Only print two or three ring sizers at a time. Estimate your ring size and print two ring sizes. Wear the ring sizers for 24 hours to find the most comfortable size.
3. When you’ve defined your size, consider passing the ring sizers to friends and family.

NOTES

The ring sizers are not a toy. Do not give them to children.

TERMS OF USE
Oura Ring 3D Sizing Rings

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.