Building a 3D Printed Pick and Place Robot Arm

For the Industry 4.0 Personal Manufacturing Demo I started with a off the shelf robot arm(Dobot Magician) but I could not get the repeatable accuracy and it would need to be recalibrated several times a day. So I designed my own 3D printed SCARA style robot arm. It uses http://www.robotis.us/dynamixel/ motors.