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The CoolSpin Spinner consists of 3 parts that all need to be ordered. The spinner, the top button (customisable with your initials) and the bottom button (this part). The parts can obviously be ordered in different materials, making for cool combinations. ATTENTION: All three parts are necessary for the spinner to work, together with 2 additional ballbearings (one on each side). I am using ceramic bearings with a diameter of 13.5mm, a hole in the middle of 6.1mm and a height of 1.5mm. These can for instance be found on AliExpress in the Fengfuqiang Feng's store. But any bearings of that size will work.
The spinner shown is the prototype. The spinner delivered will have slightly higher buttons, so that you can also spin on a tabletop. The bottom button will be with the radial patern. The top button can be with the radial pattern or your initials.