Camera housing mounting set / Pièces de montage pour boîtier caméra

English
I found great the camera housing designed by Ethan3D:
https://www.thingiverse.com/thing:2498030
So I decided to build a few things to enhance this box.
My design includes the following items:
Upper holder part
Lower holder part (with or without positionning steps)
Screw
Nut
Pi camera holder (front black part on the pictures)

To build the small Pi cam housing, you will also need the file
Raspberry_Pi_B+_Camera_Deckel.stl (small white square part on the pictures)
from this: