I wanted to mount the Antenna on the roof side of my home.
I first designed a part which fits the bed of my X1C expecting it would provide enouth room for the antenna to move. Unfortunately, it was required to do a second part to make the antenna positioned higher and farer from the side of the wall so the antenna doesn't collide with the tiles when tilted.
The fixation with between the mount and spacer relies of 4 M4x50 counterscrew bolts and 4 M4 nuts
Fixation on the wall will rely on 4 screws diameter 4, with a length and type which will depend on what material you want to fix on (in my case it is 4X70 autotap screws for wood
I included step files in the model files so you can modify the model as per your own requirements
I printed those two parts in Bambulab PETG/CF as it was what I had at home available at the moment with enough resistance for this (nozzle 0.6, strength setup, with Gyroid infill, no support needed).