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.
Hm... well, it depends on what kind of machine you use. We use this kind of design for resin printers so we can make metal masters, but on an FDM machine, we tend to scale these up a little to print them (using the 18mm versions). However, you might try printing at 100% infill? I don't know if that would help, but it might be worth a shot.