This is a case for the Duet 3d printer controller.
15mm nylon spacers (This allows space under the PCB for wires)
4x M3 screws to secure PCB
2 screws to secure the case
100 x 123 x 3mm acrylic sheet
Using acrylic lowers the print time and gives a really nice finish.
I just glued it to the inside of the case (see pics)
20% infill printed in PLA.
I used the screw terminals on the PCB so made the case slightly bigger than the board itself.