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 glued the ABS hinge on the ABS parts and connected it with a screw. If I remember it right i used an M4x25 screw, but i am not sure. I also used this to connect it to the chest. The Ribs are just added because of a wish of a member of thingiverse. If I were you i would make them of foam, because it is much more comfortable.