Bullet Shell Spinner

thingiverse

I recently visited a shooting range, bringing some of the spent casings back home. The design accommodates both 9mm and .357 caliber cartridges in a configuration of your preference. The bullet casings are simply pressed into place by friction, although you can opt to secure them with glue if desired. This particular model requires eight shells and one standard 608 bearing for assembly. Measurements are provided in millimeters.