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.
I changed the OpenScad file and placed base and idler beneath each other. Furthermore the file compact_direct_drive_extruder.stl has been added, that contains both base and idler.
If you like to enable/disable parts, you may have a look at the end of the OpenScad file. Each part has its own module and therefore can be commented in or out.