A quick mount for the Sony action cam HDR-AS20 (and compatible models, such as HDR-AS15). The distinguishing feature about this mount is that it leaves the latch that covers the charging port and microphone port still accessible.
It also provides a small GoPro-compatible mount to be used with GoPro accessories. Otherwise design a 16mm wide, flat piece and glue it on top of the mount to join it with anything of your choice.
Prints in three pieces and they are glued together with super glue.
Just simply glue the smallest piece onto the long rod that goes along the length of the camera. It locks the camera in place in the mount.
Then glue the GoPro mount on top in a location that is balanced with regards to the center of gravity of the mount + camera.