3D Model of the Official Touchscreen for the Raspberry Pi. Attached includes a 3D model in SketchUp that contains a model of the touchscreen, and a case that is printed in 3 parts.
I printed the case at .3mm layer height to speed up printing, but I would suggest using .2mm or higher so that the angles come out better.
Required to assemble this case is either 12 #4-40x3/4" screws or 12 M3x18mm screws. First attach the bottom layer to the touchscreen, then the middle to the bottom, and finally the top to the middle. This case is only designed to fit if the Raspberry Pi is inverted upside down like in the pictures above.