I changed it to take M3 locknuts to screw the case together, added a separate mounting bracket to mount the case and to clear the bottom for cooling when the box is used just sitting somewhere. Also made the box a bit larger on one side to create room for airflow from bottom to top.I use mine to play music/stream spottifyhttp://www.pimusicbox.com/Step file is included if you want to modify, make sure to keep enough holes for cooling.If you use it with the mounting bracket you need 30mm m3 screws.I printed mine with a 0.4 nozzle , 0.15 layer