About this 3D model

http://youtu.be/j8raLljA-Kw 3D printed reciprocating rectilinear motion actuator like http://507movements.com/mm_114.html Works with a nema 17 stepper or with the adapter plate with a geared DC motor. 5 and 6 mm gear available I used 2 rods from an old DVD drive and cut some brass tube with 4x0,5mm as bearing. It works not as smooth but works directly in the printed plastic the holes are 3mm.