Open Gear Bearing. 0.31 tolerance. 10mm high.

thingiverse

This print showcases two shells and no infill, resulting in an aesthetically pleasing and functional object. Although one superfluous shell is on the bottom, it doesn't impact performance. To achieve a colored effect, I switched filaments twice during printing. To ensure proper separation of gears, I increased the tolerance to 0.31, but may try 0.29 next time. This design is based on a customized version of the Thingiverse model (http://www.thingiverse.com/thing:53451) created using Customizer. Key parameters include 9 sun teeth, 5 planets with 7 teeth each, and tolerance of 0.31. The print uses w=6.7, P=45, T=10, and D=51.7.