Flying Saucer UFO Fidget Spinner Hand Spinner

thingiverse

Kids are absolutely crazy about fidget spinners these days... I wanted one that looked like a flying saucer, but not your average spinner. This model features a center section that spins freely, while the top and bottom of the saucer remain securely fixed on the peg. It requires just one 608 spinner bearing to get it up and running. The center section boasts eight M8 or 5/16 nuts for added weight, which are cleverly printed directly into the model. To insert the hardware (.12 layer height), I paused the print at layer 63. If your fingers happen to be small enough - unfortunately, mine aren't - you can hold the center and spin the outer part as well, so I added holes for four 608 bearings to give it some extra weight on top. If you'd rather not weigh down the outside, simply print two of the parts labeled bottom. This design also works incredibly well as a propelled top, which is actually my favorite way to use it. To see it in action, spin the center section as hard as you can while holding the top and bottom dome securely in place, then set it on a counter - and watch as the top and bottom begin to accelerate, spinning on the bottom dome for quite some time. My second version, which takes a more traditional fidget spinner approach, is available at this link: http://www.thingiverse.com/thing:2327987 To print out your very own flying saucer spinner, you'll need to produce one top, one bottom (or two of either), one center section, one peg, and four to six washers to space the center just right, ensuring it doesn't drag against the top and bottom. While I haven't quite gotten this design to spin friction-free yet, it still spins pretty smoothly.