Mountings for Liesegang Projection Screen

This is a typical example for an ideal use of a 3D printer, like printing spare parts. Especially if they are out of stock and you can't buy them anymore. And there is a big advantage, you can make them better, more stable and you have the possibility to adapt them to your needs.
In this case the left mount of a screen has been broken.
I decided to separate the fastening angle from the mount housing so it is adjustable to warping walls or ceilings.
The screen was mounted to the wall befor