Fidget Spanner Spinner Hand Toy

thingiverse

Everyone keeps making the same minor variations on the same spinners, so here's something more original. For those who don't like the sharper corners, there's also a smooth variant. This is a small spinner that uses 625zz bearings with an outer diameter of 16 mm and a thickness of 5 mm. The small size makes this especially kid-friendly, and allows adults to swing it around in one hand when holding it at one of the outer bearings. The spanner is 9 mm size and should be functional if you either don't put too much stress on it, or have it printed in steel :) You can fill the holes in the bearings with caps in the shape of a ‘bolt’ and ‘nut’ to greatly improve the fidgetability. Because the smaller caps are also 9 mm, you could hook up multiple of these spinners together. The nuts/bolts come in two sizes, the smaller one is 9mm, the bigger one is 10mm and is thicker, which makes it ideal for the center bearing because it allows the spinner to be placed on a flat surface while spinning. Print Settings Printer Brand: FlashForge Printer: Creator Pro Rafts: No Supports: Doesn't Matter Resolution: 0.1 mm Infill: 100% Notes: 100% infill will make it heavier and let it spin longer. For the same reason, a dense filament like PETG is ideal (PLA also is usually heavy, although this may vary between brands). In my case, the blue PLA print is heavier than the green PETG even though they have the same infill. The models come in multiple tolerances. The spinner itself comes in a regular version with holes that are just a tad larger than theoretically needed for the bearings, this is the one to print if you know your printer usually prints holes too small. The ‘tight’ models have a hole slightly smaller than necessary, this offers a very snug fit for the bearings if your printer is very accurate. The nuts also come in three different tolerances, 0 is exact, 1 has 0.1 mm extra hole diameter, and 2 has 0.2 mm extra. These things are small and quick to print anyway, so you might as well print them all at once and see which one fits best. If you print in a filament prone to shrinking after cooling down, like ABS, you might want to upscale the model by a fraction of a percent to compensate for shrinkage. Post-Printing Some sanding may be required to fit the bearings and the ‘nuts and bolts’ if your print isn't perfect. Avoid using excessive force when pushing the bolts through the bearings. Ideally, the bolt axle should be exactly 5 mm thick, which will provide a snug fit without having to push hard on the bearings. You can sand the axle and check with a calliper or micrometer until it is exactly 5 mm diameter or slightly less. Updates 2017/07/09 Replaced the models with v2 version, which should be almost perfectly balanced (if printed with 100% infill). Provided a larger end cap to be used as center cap allow spinning on a table. Also, the caps now have a better clip mechanism that snaps in place.