3D Spin Top

thingiverse

The top spinners have a tip crafted from an extremely hard material to reduce friction between the top and spinning surface. This design necessitates attaching a steel ball to the bottom of the print using adhesive. One such design incorporates 1/4 inch stainless steel ball bearings, while another utilizes 3/8 inch (Amazon offers them). By implementing these and a concave glass lens or mirror surface, spin times exceeding six minutes can be achieved. A short video showcasing the top in action is available here: https://www.youtube.com/watch?v=lySgPi_sKsk Print Settings: Printer Brand: MakerBot Printer: MakerBot Replicator 2 Rafts: No Supports: No Resolution: 0.2 inch Infill: 100% (see note below) Notes: I employed "bottom solid layers" for the entire print, resulting in 100% infill without utilizing the infill design, which jammed my printer. Locate this setting and set it to 100 bottom solid layers. Post-Printing: Add the Steel Ball Clean up the print and then secure the ball bearing in place using super glue. Design Process: I utilized Fusion 360 and Simplify3D. Utilizing Fusion 360, I designed the cross section in two dimensions and then rotated it about the vertical axis using the Revolve command. I exported the STL file and then prepared it for printing with Simplify3D.