Spinning Fidget Ring

Some people just can’t sit still. Some people need some stimulation, especially when stuck in a boring class. A simple ring design can help with that. This is a ring that you can fidget with. It has a design in the middle that spins. You can mindlessly spin it without thought. Never again will you be bored out of your mind.

I took major inspiration from OwenTF's and Makkuro's ring design. They can be found at these links.

https://www.thingiverse.com/thing:6517978

https://www.printables.com/model/133578-print-in-place-fidget-ring

1. A 3D Printer
2. PETG Filament (Other filament could work)
3. A 3D CAD Program (I used SOLIDWORKS)

I drew out a sketch for the inner ring. This is the part where the outer ring will spin on. I drew a centerline that's vertical to the origin. This will act as an axis for a revolve. You want the horizontal centerline to be the diameter of your ring size.

Use the attached chart to see how big you should make the ring.

https://forgivenjewelry.com/products/ring-sizer-chart

Next, I sketched the outer ring that will spin around the inner ring. I left a 0.65 mm gap between the two rings and finished the revolve. Depending on your 3D printer, you may need to adjust the gap size.

Next, I added a design for the outer ring. This design will make the ring look more interesting and make it easier to spin.

I then made a circular pattern to make the design appear around the entire circumference of the ring.

We now have the ring fully modeled, and it is now ready to print. Export the file as an.STL file or whatever file type works with your printer.

I printed the part on a Bambu Lab A1 3D printer (provided by my school, thank you very much). I used PETG filament, but other filament types should work. The inner ring should loosen enough that it can be taken apart, but it won't fall out on its own. If this is not to your liking, you can change the gap to be smaller.

My previous designs suffered from multiple problems. The last design spun very well, but there was too much space between the two rings. The inner ring fell off very easily. The design before the space between the rings was too small. It didn’t spin at all. I didn't print my first design, but it would have had the same result as the last design. Despite my errors, I eventually printed out a successful design that I was satisfied with.