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.
The magnets inside the rotor are meant to stick to the two larger bearings on the eccentric shaft. They don't need to be in contact with the bearing. The slight magnetic force just keeps the rotor from wondering out of the housing when it's open. As for the visual coolant blocks, I like to print them with the first layer really smooshed so that the "elephant foot" of the first layer allows you to just press them in with out glue.