B.O.F.S.

Bottle Opening Fidget Spinner

Skills

3D Design & Modeling
3D Printing
Iterative Process

Personal Project

Inspiration

One night hanging out in my apartment, I saw my friend playing with his fidget spinner for hours. Throughout the night, he had to keep putting down his spinner to take off his bottle caps. That's when I thought to combine them, so my friend would have uninterrupted fidget satisfaction.

Process

I immediately began searching how to 3D print a bottle opener. From here I would radially pattern that into a handheld design. The key components for this are the pennies. Not only do they get leverage under the bottle cap to pry it off, they serve as a weights. As weights, they increase the rotational moment of inertia causing the spinner to spin much longer than it would have otherwise.

I designed an integrated roller bearing to be printed with the body of the spinner. Performance testing among numerous iterations for bearing designs led to the 7 Quarter Inch ball bearings for the smoothest and longest spin.

The finger caps were tested in many different configurations and designs. The caps were tested for their strength against aggressive spinning and user comfort while spinning. A magnet was attached on both caps so that the B.O.F.S. can stick to your fridge for convenience.

Result

From months of testing and redesigning each component, the result is the B.O.F.S. This unique fidget spinner can spin for minutes on end and also open your favorite glass bottled beverage.