Wanted to make a foldable Multicopter-camera-platform. Designed all parts in Fusion 360, made a prototype, adjusted parts and printed the final version. It is now equipped with a std 4in1 ESC and simple naze32-clone, but could also house 4 seperate ESC's if needed. Plenty of room for a HD-camera, Gopro-style, and FPV-camera, VTX, ... Uses std DJI-props and is very stable with the help of BetaFlight.