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 have only my personal experience to contribute with: the present configuration with the magnets I'm using feels very close to gripping an object. It sits well on its own and doesn't come off with swinging and wiggling the stock around, and I can remove it without much effort. Make sure you glue the magnets properly and permanently! I was lazy the first time around and one magnet ended up being pulled by its counterpart :b