Ball Bearing Spinner 3-4

thingiverse

Spinners using 608 bearings positioned in the center and 5/8 ball bearings for added weight are included. Some taller caps have been designed so that when set on a flat object, they will clear the balls and spin freely. A box of 50 ball bearings was purchased from Amazon for $18.25 at https://www.amazon.com/gp/product/B007B2AD70/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1. For my initial test, a few were picked up from Ace Hardware, but they proved more expensive when bought that way. The caps in the pictures feature a circle and crosshairs pattern. The plain (TallPlain and KAP4.1NEW) are simple smooth flat bottoms. Videos can be found at https://youtu.be/hmLTzb4DPaI and https://youtu.be/9oPLGj8kDA4. Print Settings Printer Brand: SeeMeCNC Printer: Rostock MAX v2 Rafts: No Supports: No Resolution: .3 Notes: Printed at .3, 5 perimeters, 0 top and bottom layers, and no infill. Infill should be used for caps. The perfect settings for those are still being sought after, as 100% infill makes them too tight, while 50% is a bit loose. Try using 75%. I usually sand the tops (small center) on a flat surface with sandpaper to flatten them and ensure they don't bump into each other due to any nubs left from printing. It should be possible to pop the bearings in from the bottom side without having to scrape the edges, as it usually seems slightly looser than the top. If it's too loose, increase the bottom layer extrusion to compensate. The outer bearing sleeves are cut out with a sphere so the center is wider than top and bottom. There will be a little play in them, which I kind of like because it makes a little rattling sound when you hold it on end or move it around. When spinning horizontally, it's smooth and silent. The 3 bearing design is my new all-time favorite spinner.