In addition to the concise textual instructions and over 600 illustrative images, the OpenMMS documentation also includes detailed 3D models of the assembled 13 component Aluminum Case and the three Printed Circuit Boards. Viewing and analyzing the models helps to understand how the case and PCBs go together.
Aluminum Case v1.3 – 3D Model
RPi Printed Circuit Board v1.3 – 3D Model