Polargraph Motor and Controller Mount

Mounting System for Nema 17 Stepper Motors and Arduino UNO/Mega on a 9mm board.
The parts can easily resized in Z-Axis to fit on a thinner or thicker board.
For easier calibrating there is a mark on the upper side of the Motor mount wich is exactly 50mm horizontally distant from the Motor Axis. The upper side of the Board is 23mm under the motor Axis.