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 ordered the pinion on the list. Regardless, the gear tooth size is small enough that .1-.2 mm variation in center to center distance (3d printer variance) would reduce engagement. My first gear stripped before the car traveled one foot; this prompted me to look closer.
Just sayin’. Some adjustment might help some builders. I noticed you mentioned having extra gears printed for the class since they do wear out after a while.
This project has been fun!