This is a simple adapter to suit a Bilora Safari Tripod so you can use your smartphone.
It prints fine at 0.2mm but I would recommend 0.1mm on the threaded parts. You don't need support material if you orient it correctly.
It provides good grip but the phone can be moved sideways with external force and I would recommend foam or rubber pads on the gripper.
You will have to run the threaded handle a few times as it is initially quite stiff.
You can read more on my blog http://www.samjohnston.net/blog/2018/10/23/smart-phone-adapter-for-bilora-tripod