Modular PI Cam housing with system32 support

I never could find a proper solution to mount my PI and PI cam in my build enclosure, which is a modified IKEA kitchen cabinet with 'system32' holes.
As I also wanted to add a lens to the PI cam as I could not get the entire build plate on screen, and did not want to reprint all the parts again due a change, I decided to design a modular housing.
This modular housing is split up into the following parts:
- Lens adapter ( so this can be adapted to any new lens with different focal lengths or