This box allows you to fix the CC3D Atom board on a standard 30.5mm footprint. It allows the routing of cables under the case. The box is only suitable for clone CC3D Atom flight controller. There are two different board layout on the market today. Please, refer to the attached images to determine if your flight controller is suitable. If you have the genuine OP layout, please refer to this box http://www.thingiverse.com/thing:901880 The top cover has the LibrePilot logo. The reason is because LibrePilot still supports CC3D/Atom. https://forum.librepilot.org/index.php?topic=12.0 Based on Fredrik Arvidsson revonano original OpenPilot design (m-thread on forums) published here: http://www.rcgroups.com/forums/showpost.php?p=32005213&postcount=195Print in ABS at 0.14mm, or any material which allows post processing. The top cover holes need to be reamed to 3mm. The holes in the bottom box must be threaded for M3 screws. It's printed with the Zortrax M200 with Z-ABS filament. Because of the precise tolerances required to lock the board, I have no idea how it could be with other brand printers.