Concealed Nickel Spinner

thingiverse

I've added a mini version of that design to accommodate smaller hands. The original spinner design featured nickels on the outside, which didn't quite have the desired look. Moreover, after being dropped, the nickels sometimes came loose. To address these issues, I created an enclosed design that's printed and then fitted with nickels during the manufacturing process. To do this, at roughly 6.3mm into the printing process, the machine is halted temporarily to insert the nickels into their designated gaps. The printer then continues its operation, covering the coins with a layer of material and sealing them firmly in place within the spinner.