Armattan Beaver GoPro mount. Fits both the GoPro 9 and 10. There are a few adjustable mounts out there for this frame, however I personally do not like this kind of mount.
Put 3 degrees variations here: 25, 30, 35. Can make more if needed.
Print in TPU with openside facing up, 100 percent infill but up to you. Supports only touching bed, see images
The author remixed this model.