Parts. I purchased an N20 60RPM 6VDC gear motor, a dual AAA switched battery case and two AAA batteries. I 3D printed one each of all the parts at .15mm layer height, 20% infill and no supports. The model uses threaded assembly thus an M8 by 1.25 tap and die will assist with thread cleaning if necessary. Assembly. I assembled the model as shown in the video by performing the following steps: • Soldered the battery case wires to the gear motor. • Turned the battery case switch off then installed two AAA batteries in the battery case. • Pressed the gear motor into "Base.stl".• • Pressed "Gear, Motor.stl" onto the motor shaft such that the shaft end was flush with the gear surface, then aligned the motor in the base to allow .5mm clearance between the motor gear and the base. • Slid "Yoke.stl" into the base as far as it would go. • Positioned the pin on "Gear, Yoke.stl" in the yoke slot, slid the gear and yoke until the hole in the gear was over the threaded hole in the base, then secured the gear to the base using "Axle, Gear, Yoke.stl". With assembly complete, I turned on the battery case switch and off it went! And that is how I 3D printed and assembled "A Simple 3D Printed Scotch Yoke Mechanism". I hope you enjoyed it!