Another Duet WiFi Enclosure with Fan

This is a Duet Wifi Enclosure that takes an 80mm fan internally. The fan blows cold air on the underside of the board (where it is needed for cooling the stepper drivers) and exhausts through slots in the top and bottom of the enclosure. It is recommended that the fan is mounted using nylon nuts and bolts to ensure that there is no possibility of the bolt heads shorting on the underside of the Duet. There is access to the micro sd card as well as reset buttons etc. There are slots for cable entry on the left hand side and mounting holes on the underside. There is provision for a big ribbon cable between the cable entry slots and the lid for connecting the expansion connector. I've included the open scad file so it'd be easy enough to change the cable entry to the other side and/or change the mounting hole positions. There is also a lid - attachment by using small wood screws or self tapping screws and I've included an stl file for an 80mm finger guard.