Phone holder for tripod

I designed this phone holder to with the idea to have minimal parts and print time and no support.
The base can be mounted on a tripod with a standard 1/4 - 20 unc screw.

It is advisable to print the knob with at least 50% infill and layer height 0.2.

ther is also an newer version of the phone holder:

phone holder v2 by 3D-maker | Download free STL model | Printables.com