Interchangeable Arm Penny Fidget Spinner

thingiverse

I wanted to create a spinner that allowed for interchangeable arms, so I did just that. You can now customize your spinner's body and arm color to suit your taste. The idea was to design it in such a way that kids could trade and upgrade their arms with new ones, giving them the freedom to choose from any color scheme they like. To ensure proper balance, use pennies as weights for each arm. A helpful tip is to utilize a gram scale or a balance to guarantee that your sets of pennies are very close in weight to achieve perfect balance. Alternatively, you can stick to using all pennies from the same year. This is because the metal composition has undergone significant changes over the years, resulting in a noticeable variance in weight among pennies of different ages.