Apple style phone stand / holder with tilt regulation.
For the entire assembly you'll need:
(1x) M6 x 40 screw (12 x 1 1/2 for the imperial folks)
(1x) M6 nut
The two big parts are tricky to print.
I wanted the teeth to be printed correctly so I positioned them facing upwards. And used support everywhere. (see print pic).
I don't know that this is the best method but it worked for me and print quality turned out OK.
It might not be necessary, but I also used support to print the two caps and the knob.
See attached pic for assembly instructions.
You might need to excert a little bit of pressure when inserting the caps. (or glue if they're loose).
Print the two big parts with the teeth facing upwards using support everywhere.
I also used support for the knob and the two small caps.