Orange PI 3B fits in this case with bottom m2 drive.Side dor for 40 pin (i'm using model with door included)Power buttot can be fixed by simple tape, just ta make easy assamle.You can use 4x M4 with 10+mm length for connect top and bottom plates, also legs.
Materials:PLA/PETG, i used PETG just because better performance4x TPU legs for less vibrations