New version - http://www.thingiverse.com/thing:1697237
Improved version of http://www.thingiverse.com/thing:724526
Phone mount portion can be snapped on and off of transmitter. The thumb screw has been improved over the previous version. The phone bracket has ears that make it easier to remove the phone.
The mount is designed around my LG G2 in an Incipio case. Modify the clips for other applications.
The pieces were printed in PLA at .2 mm layer height and 100% density. The center mount piece is tapped with M3 threads. Printed pieces hold threads well. M3x25 socket head screws hold the clips and spacer to the center piece.
An M4x45 flat head screw holds the mount to the transmitter bracket. A nut secures the bolt to one side of the arm. The well in the thumb screw holds an M4 nut.