I have a wooden version of this machine and i wanted to see if I could print a version for my cousin.All of the pieces needed to assemble it as I did are included. No screws or washers were needed. The prints were all pretty straight forward.

Once all of the pieces were assembled, I pushed the pins into the sliders. The bigger end is designed to push into the slider. The small end is meant to go through the handle. The pin should hit the bottom and snap into place.

After sharing this design in a few places., I found out the official name: Trammel of Archimedes