MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

Download Now

Report as inappropriate

Basically a sun gear with something that will fit a 18.75mm shaft. The Outter gear that planets fit in would be 2 inches around. The sun would be around 1 inch . So im guessing the planets be around half inch .