Exciting news! The Framework team put out files for a mainboard case for the FW16. I skeletonized it, and printed it out. It fits both the expansion bay and dGPU module perfectly, and feels surprisingly sturdy once in.
Framework team, plllleeeease put out some mystery boxes, I’m putting together a print for clustering these together into a module for my server rack and need more main boards 
Some things to note about this case:
1: The expansion card slots don’t hold the expansion cards well, leading to stress on the ports (see the last picture). I’m printing a test fix and will share the files if it works
2: once assembled, it does not like to come apart easily
3: The screws for the expansion bay/dGPU that work are the official framework M2 3.0 fastener 4.5 diameter
4: in a heated chamber, I printed it at 100.4% scale to compensate for ABS shrinkage. The dimensions are great and the board fits snugly
