I designed this case back in February 2015, but didn't publish it immediately because I was toying with the idea of offering it as a commercial product. Unfortunately, my printer was giving me grief at the time, so I decided to just publish it instead. My loss is your gain! Enjoy.
It could probably use some additional ventilation. I'm providing the original SketchUp file to make editing easier. I think my next version of the case will be laser-cut wood.
See also my model of the Raspberry Pi 2 itself:
Raspberry Pi 2 (from caliper measurements)
Printed on a LulzBot Taz 4 in black ABS. Gcode files are provided for the Taz, however you may want to generate your own to suit your needs. It's held together with #4 machine screws (x4), nuts (x4), and washers (x8).