Simple case design based on the pi 2 model by lyratron.

The inside dimensions on this part need to be correct.
In the design I left a .5mm gap around everything, effectively a millimeter of wiggle room over all. I am finding my one ABS printer/slicer is adding .5 millimeter to the walls and so that removes all the interior wiggle room I built in on purpose. While my one PLA printer nails the spec. So be advised and be sure the pocket size in the bottom part is 57x86, you don't want to force anything here, the SBC should just drop in by placing the edge with the ports in first and letting the other side drop into place.