M18x2.5 Nut Spinner

thingiverse

This is a compact fidget hand spinner designed to utilize an M18 nut and MR105 bearing (5x10x3-4mm). ## Updates - 2018-04-09: Added Dish_Button_Set.stl and Dish_Button_Set_PrimeTower.stl (requires supports) ## Features - Screw-in system Adapters and buttons can be secured with printed screws, making it easier to remove or replace bearings. - Easy twistable button The button is designed hexagonally for easy twisting with fingers. - Clear and smooth gyroscopic effect Using a small bearing reduces the judder and noise emitted when the spinner is tilted, allowing for a clear and smooth gyroscopic experience. When rolling the spinner with your palm, the momentum of spin increases and the gyroscopic effect also intensifies. ## Variability of Bearing Axis If the bearings are not fixed with tape, they will move slightly each time you use the spinner, resulting in irregular changes to the gyroscopic effect. This allows for a small difference in gyroscopic experience every time. When using a lubricant that combines oil and grease, the bearing's position will change less, but the feel of spin will alter due to the changing hardness of the lubricating film depending on temperature and conditions. ## Continual Spinning Spinning momentum is added when you slap the spinner with your palm. This allows for endless spinning. ## Vertical Placement When placed vertically after spinning, you can immediately grab the button when using the spinner again. ## Notes - Filament I printed with PLA filament but have not tested it with ABS or other filaments. When printing with ABS filaments, care must be taken as they may break if oil or grease adheres. - Warp at the top of the adapter If warping occurs in the screw part at the top of the adapter, it is good to sand and flatten it. ## Expected Grease Life for Gyro Effect - White lithium grease: 1 week - Urea-based grease: 3 months - Aluminum complex grease: unknown (I have not tried it yet) If concerned about smell, consider using food-grade grease.