Filament Clip Clamp

After trying several clips, I decided to make one myself which met my own requirements.
I came up with the following idea and now the filement is fixed and secure.
Clean the threads after printing and if necessary tap the M4 hole in the main screw a little bit with a M4 metal tap.

Newer version with better threads: https://www.thingiverse.com/thing:6142049

I used the finest settings in Cura