Apex v3

A 5 or 6 inch quad frame using 3/4 in Pex pipe as arms. Its nearly indestructible but heavy. Great for a basher or to learn how to fly with. It's got plenty of room for electronics.
Its a WIP and there are a few issues with the design.

The battery strap holes in the top plate are a little tight and not in the best spot if the gopro is mounted and the battery is slid further back to clear the cam. The camera mounts will need to be drilled to fit your camera. The gopro mount could block some of the FPV cams view if its at a steep angle and mounted back in the frame.

The gopro mount will accept the session cage from this great X210 pod. ( I use this pod so my gopro can go on both frames)
https://www.thingiverse.com/thing:2008868