Spinning top v8

thingiverse

The human is a spinning top that spins for over three minutes. Printed at 50% scale without support, the ring should be printed at 100% infill for maximum weight, while the top and tip are printed at 30% infill. At 50% scale with layer height 0.1mm, the parts fit well together and snap into place easily. After snapping them together, the ring is completely enclosed, and the outside can be optionally sanded to a smooth finish. With larger or smaller scales, the fit starts to become either too tight or too loose. At 70% scale, for example, I find it to be too loose, while at 40% scale it's too tight. Your specific print conditions will likely change this, but I recommend starting at 50%. (A newer version of this design can last up to four minutes: https://www.thingiverse.com/thing:3129942)