M12 Nut Spinner

thingiverse

This is a fidget spinner that achieves its rotating mass primarily from M12 nuts.\nNot only do M12 nuts weigh more than other bearings, they are smaller and can be mounted in creative ways - here's my attempt at doing just that.\nSome simple math:\nStandard tri spinner: 12g bearing3 = 36g rotating mass\nThis spinner: 16g nut6 = 96g rotating mass\nThere is a bit more to it than that, but that's beyond me!\nPrint Settings\nPrinter: \n XYZ Da Vinci Mini W\n \n Rafts: \n It doesn't matter\n \n Supports: \n No\n \n Resolution: \n 0.2mm Layer height\n \n Infill: \n 20%\n \n Notes: \n I created this design in Onshape - it's one of my first models!\nI thought using bearings as weights for a fidget spinner was expensive and not heavy enough. Enter the M12 nut - these guys are cheap, heavy, and really uniform in weight. This means even cheap bearings can spin for minutes with a full payload. The spinner can be lightened by removing a set of nuts.\nMy bearings weighed ~12g each, these nuts weigh 16g each and there are six of them!\nThe nuts are quite tight to thread on intentionally - this will depend on nozzle width and the precision of your printer. If they're a bit loose, you can easily lock two nuts together.\nPlease comment with thoughts and improvements to the design.\nLink to file: https://cad.onshape.com/documents/5ca86b800e5179beb8603669/w/347d82ae95c010c689c0dd67/e/7f54f0ada856c21e8dcbbb3a\nPost-Printing\nStep 1\n Print the file\n Step 2\n Thread your 3-6 M12 nuts onto the arms, they will be very tight (you don't want these falling off at speed!).\n Step 3\n Press your bearing in - this should also be very tight, but friction fit. Freezing the bearing may help it fit, but be careful not to burn yourself.\n Step 4\n Spin, spin, spin!\nHow I Designed This\nI'm a complete CAD novice, I followed Onshape tutorials and had a go at something different. There were some features I wanted to add, but I haven't figured this out yet!