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'm glad you find it useful - it's one of the most useful things I've designed. Yes, the blade holder snap fit is pretty tight. I think I just used my usual 20% infill and 3 perimeters. Inserting the blade holder from the side there the pivot boss is tapered helps get it wedged into place.