Instead of my daughter asking me to buy her a fidget spinner every time we went to the store I decided to create one myself. I got carried away and ended up 3D modeling and printing over 20 variations.

All you need to create one of these (or 20) for yourself is a skateboard bearing, some hex nuts and a 3D printer.

Let's get started.

If you like my design please give it a vote in the fidget spinner contest here: https://www.instructables.com/contest/fidgetspinner/design/Hex-Nut-Fidget-Spinners/

Step 1: Materials

The supplies you will need to make these are:

Standard #608 skateboard bearings. I used Bones Reds.
Hex Nuts with an OD of 11/16". I used 7/16"-20 hex nuts because I had a lot left over from another project but you can use any nut with an OD of 11/16". Find them at your local hardware store individually or online in bulk.
A vise with non-marring jaws is optional but recommended.
3D printer. I used a Printrbot Simple Metal with PLA filament. If you don't have a 3D printer search for a local Maker Space or use one of the many online 3D printing services such as Shapeways.

Step 2: Download and Print

Choose one of my Hex Nut Spinner designs and download the corresponding file at https://www.thingiverse.com/thing:2437056
You will also need to download the Bearing Cap file which includes a set of 2 caps.
3D print the design you selected and also print the Bearing Cap file. You will need 1 set of bearing caps for each spinner you print.

https://www.thingiverse.com/thing:2437056

Step 3: Assemble

Gather the components, 1 bearing, 1 3D printed spinner, 3D printed set of bearing caps and the required number of nuts for your spinner.
Using the vise's non marring jaws, press the bearing into the center of the spinner and also press the nuts into the arms of the spinner.
Then push a set of bearing caps into either side of the bearing.

These are designed to be a tight fit so it may require a bit of persuasion to press all the components together but no additional adhesives are required.