Print all three parts and assemble the structure.For this you will need the following:1x 40mm fan (12V)4x M3x20 screws4x M3x16 screws (or alternative another 4x M3x20) - for mounting the fan1x M3x30 screw8x M3 washers9x M3 nutsPrinted on PLA/PHA 2.85mm Colorfabb Signal Yellow, with a 0.5mm nozzle, layer height 0.3, on a Prusa i3.