This clamp is used to secure the PTFE tube when the spools are above the printer, for example on a shelf (mine is 35.2 mm thick).
The model is made up of 2 separate parts because they must be printed with different orientations (the clamp must be placed horizontally on the surface for greater resistance, while the guide must be printed vertically, in order to obtain a good thread) .
The parts are deliberately hard to assemble (so as to avoid the use of glue), use a file to facilitate the marriage between the clamp and the filament guide
The model is designed to be used with:
https://www.printables.com/it/model/529258-pc4-m10-fitting-printed-substitute
The author remixed this model.
I used the base of this model out of laziness. I kept the clamp part, albeit modifying some dimensions.