This is a anclosure for my GRBL-Trinamic CNC stepper controller. Maybe this is useful for others because it has a mount for a Mega256 Arduino board plus an opening for the USB-Connector and a slot for a 100x95mm sized (cut short Eurocard) PCB with an opening in the top plate for screw terminals. I did draw this in Sketchup, so it should be fairly easy to adapt this enclosure to your project. I printed this on a Makergear M2 with a heated glass bed, only the fan opening in main part (the profile) was a little problmatic (to much heat going into the small part in the middle caused somem bending) otherwis everything went fine.