Case for Raspberry Pi 2 Model B

Case for Raspberry Pi 2 Model B.

Intended screws for attaching the board to the case are thread-forming screws PT K25, with nominal diameter of 2.5mm and length of 7mm.

This was a project to make a case for Raspberry Pi 2. It was meant to be optimised for injection moulding with simple 2-part moulding tool.
There were also some other requirements:
- The board is connected to the case with thread-forming screws
- Design for assembly and Simple assembly
- It must withhold a static load of 20kg and deformation must be smaller than 1mm and must not touch the board at any point.
- Mass less than 70g,
- Cases must be able to stack on each other
- Calculate all the joints
- Analysis of injection moulding
- Design of moulding tool

My design has some advantages. There is no visible line between two parts. I really like how I was able to hide the line between two parts on the inside of the case. Also the force applied to the top of the case is transmitted trough the ribs di