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

Hi T1GGE. No, a spring is not important for this extruder. Just tighten the screw enough to give the drive gear a good grip into the filament, but don't overtighten it. I've used my extruder a long time without a spring and it went fine...