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 snapped the blades. Those are actually quite strong with a .4mm nozzle (2 shells) at .3mm layer height (I wouldn't do any other layer height purely because I'm impatient). I snapped the bottom of the threaded cap by pushing the blades back into the handle. I solved this issue by adding more bottom layers and reprinting. It's held up for now.