Action Cam handle (diving)

***********************
UPDATE: Forcella V2

After reported weakness of the fork area, I made it thicker. I did not test it yet, so I'm not sure how much it improved.
I took the chance to remove my name from the handle and replace it with my logo.
***********************

Yet another handle for an Action Cam to be used underwater!
I searched far and wide for a handle that would fit my printer to no avail, so I decided to design my own.

The design fits a small printer like mine (build plate 130x130x130mm) thus is made of three parts: the top part with the cam holder, the shaft and the bottom cap. The three parts are screwed together with a "bottle-like" thread.
The inside of the domes is conical designed to minimize the need for supports.
I could print the female threads in the shaft without support and I suggest to avoid using it since it is difficult to clean it out.
The threads are quite snug and required some sanding and a small drop of lube to assemble easily. The lub