Stacking Pi 2 case

It's basically CongoJoe's stacking case modified for the Raspberry Pi 2. I needed one for my new Pi 2, and I like his simple yet functional stacking mod for the original Adafruit Pi Box. I've added some breakaway slots on top for easier access to the GPIO, screen and camera contacts. There's not much material around the GPIO slot, so be careful if you decide to use it. Or redesign the whole thing. Putting the slots in the sides of the case would eliminate the problem and make stacking cases with cameras or screens or other I/Os possible. Use 3mm thick material, like the acrylic in the pics, for a snug fit.