Keychain-Ready Worry Slider

This magnetic fidget uses 8 disc magnets to create a twistable slider fidget. The top part can be printed independently as a worry stone. The magnets are placed only 0.5 mm away from the sliding faces, meaning it is a fairly aggressive hold. The suggested keyring (pictured) takes some maneuvering to install.

NOTES and Materials:
Minor sanding may be required. Parts in photos were printed using Cookiecad Dark Magic PLA filament. Magnets used are 5/16" diameter discs, 5/64" thickness. Part holes sized to accommodate 8 mm x 2 mm. Keychain split ring shown is 24 mm diameter (OD), and has a round wire profile. A flat profile ring will not fit the channel.

REFERENCES:
While the model is my own design, iterated through several versions of Worry Stone profile, I did test other models that use smaller magnets, namely Printed Solutions with Internal Magnets. I also used the measurements in this Instructable as a benchmark for my own placement.

Thinking Ahead:
If there is demand, I will add a “softer” version with increased distance. This may increase the risk of losing the component not attached to the keyring. I will test and report back.