print the parts upright, no support needed I recommend 0.2 mm layer height for smooth movement, 0.3 mm works as well but it will probably require a bit of use to be smooth.
Insert the cup into the pivot, if it is not smooth use some force.
Then insert the guide all the way, it should come out of the other side by 2 mm.
Now get the guide into the grooves of the base and glue it in place. I used a bit of super glue.
When the glue is dry, you can turn the base to adjust the height of the cup !