adjustable angle filament storage solution

german version below My first model that I am making available online.It is a solution for filament storage. There are filament roll holders that can be mounted either on the wall or, in rare cases, on the ceiling. My solution can also be mounted on sloping ceilings such as an attic. The holder is designed so that it can be adjusted in 5° increments until you are happy with the angle. I have not yet found this solution on the Internet. With a 1 metre long rod (https://toom.de/p/rundrohr-1-x-100-cm/1710302 or Amazon@Alberts 472504 round tube 12 mm x 1 mm x 1000 mm). I would print these parts from PETG or ASA (or similar). Because of the "creep" of PLA, I don't know if it's suitable for this, but maybe a PLA+ blend could work. As a rod for the filament, anything with an outer diameter of 12 mm and a material thickness of approx. 1 mm should work. For rods longer than 1 metre, a solid rod or a tube with a material thickness of at least 2 mm could be advantageous. For furth