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 haven't tried a MK8 pulley yet. I set my stepper motor to half steps which gives me 90% of original holding torque. I was pushing it with 4.95kg/cm. I sure a planetary gear stepper would work or a beefy NEMA 17 from Anaheim Automation would be able to push the 3mm.