Minimal In-Line Fidget Spinner

thingiverse

My kids were eager to play with a fidget spinner I'd printed from here, but it was too big for their small hands so I decided to design the smallest one possible. These are the commonly used 608 bearings that I've worked with before. The two outer bearings snap easily into place as long as you support the arm they're on while fitting them in place. The middle bearing is held in by friction and a small lip on its underside, which also gives it the benefit of using very little material, making it ideal for short leftover filament. UPDATE: I've added files for In_Line_Spinner_V2. It's more of a simple revision than another version altogether. I've just knocked off the inner corners of the snap pegs to make fitting easier and reduce the risk of breaking them while fitting. I've left the original files available for reference. If you like this one, be sure to take a look at my Double Decker version. Print Settings: Printer: Anet A8 Rafts: No Supports: No Resolution: 0.2 Infill: 100% Notes: I printed with 100% infill for maximum strength on the arms and snaps, but you could probably get away with less. It only took 15 minutes to print at 100% infill, so why not? Post-Printing: Depending on your slicing software, you may need to tidy up some slight stringing on the inner edges of the out pegs. Snap the two outer bearings into place. If you're using shielded bearings like the ones I have pictured here, you will want to make a small modification to the middle one: Remove the shields, clean the bearing thoroughly and then lube with PTFE spray or similar. There are plenty of online tutorials available that show how to do this. How I Designed This: I designed it in Sketchup. My Other Fidget Spinners: Pencil Top Fidget Spinner Minimal Fidget Tri - Spinner Double Decker Fidget Spinner Speedy Car Fidget Spinner