Stress and calibration cube V2.0

thingiverse

I built a stress test a couple of days ago (http://www.thingiverse.com/thing:1631661) Thinking about it, I added some complexity by curving edges so we can test overhang > 45° I also hollowed out the cube, so we can test walls, bridges.. lots of stuff. Try it out, let me know if it can be improved.