Supports for window rollers that leave almost no gap between the window and shades, making for a much darker room.
Compared to most commercially available supports:
First make sure the design is compatible with your rollers. Pretty much all I could find commercially have the same dimensions, they should be pretty common the EU.
There are files for left and right (it's the same part just mirrored). Print both sides and the guide as they are oriented in the files. Then push the guide into the support, there's a small mark to know when it's fully fitted.
In case you broke or lost the plug that goes into the shaft, there's a design from someone else here: https://www.printables.com/model/67566-roller-blinds-plug-for-window-clamp-holder/files
The author marked this model as their own original creation. Imported from Thingiverse.