Bike Chain Fidget

thingiverse

I first designed the centerpiece for the bearing, then crafted a 3.5-inch diameter circle to determine the spinner's size. I created one circle on the outer circle with the bearings' dimensions and repeated it 22 times using the "Circular" tool for proper spacing. Next, I made another circle around the chain bearings to create clips for the chain, utilizing the "Arc Three Point" tool to form arms from the clips to the bearing circles. I used a curved arm instead of a straight one so that when the chain was being installed on the spinner, the arms would compress slightly and then expand to tighten the chain once everything was assembled. After completing this design, I employed the "Extrude" tool to extrude the arms and inner circles 7mm. I then redrew the clips for the chain and extruded them to 7mm or .276 inches. Subsequently, I extruded each side in the opposite direction by .0755 inches to achieve a clip thickness of .125 inches or 1/8 inch. Finally, I tapered the inner circles to match the chain clips' dimensions. This fidget was constructed using a bike chain comprising 22 links. The circumference of the fidget/chain measures 11 inches and has a diameter of 3.5 inches. The inner bearings on the chain are 5/16 inch in diameter and 1/8 inch in height. Printer Settings: Printer Brand: LulzBot Printer Model: TAZ 6 Rafts: No Supports: Yes