3D Spin Top

thingiverse

The best spin tops have a tip made of a very hard material in order to minimize friction between the top and the spin surface. This design requires a steel ball to be glued into the bottom of the print. One design uses 1/4 inch stainless steel ball bearings and the other 3/8 inch (Amazon has them). By using these and a concave glass lens or mirror surface, you can get spin times over 6 minutes. Here's a short video showing the top in action: 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 used "bottom solid layers" for the entire print. This gave me 100% infill but without using the infill design, which jammed my printer. Find the setting and make it 100 bottom solid layers. Post-Printing Add the Steel Ball Clean up the print and then use super glue to hold the ball bearing in place. How I Designed This Fusion 360 and Simplify3D Using Fusion 360, I designed the cross section in 2D 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.