Optical Spinner v4 Remix

thingiverse

Added version 5, rounding off some edges and straightening out the bond between arms and body. Printed flat at .1 resolution with supports in place. The center still relies on two stacked bearings, while the outsides feature single bearings. Prints best standing upright, but this will require a raft and both configurations necessitate supports. Some clean up is necessary, as it's a bit delicate, so take your time printing and installing the bearings carefully. This design originated from an old pencil drawing used for inspiration over many years; likely picked up in a math class long ago. The center utilizes two standard 608z skateboard bearings or similar (22 mm x 7 mm) stacked back to back. Most likely the shape was influenced by doodling on a typical day when sitting and occupied. I hope you enjoy it, please let me know if I made any mistakes anywhere as my eyes hurt after staring at it for a while! Version 1 features more faces than version 2; also in version one, the bearings sit outside the frame intentionally. Version 4 added some extra bearings for weight and longer spinning time - same size as the others (7mm x 22mm). If you print it standing up, it yields good results with a raft and supports. You might have to clean inside the bearing housing a bit or scale it up to 101% depending on your printer.