bit
thingiverse
most recent versions of all logics so far are at https://www.thingiverse.com/thing:2829196 I recommend downloading from there. this is a single bit memory gate created using just links and pivot points based on the papers linked below. the scad file is in the parent thing 4 bit register http://nextbigfuture.com/2016/04/molecular-mechanical-computer-design.html http://www.imm.org/Reports/rep046.pdf
Download Model from thingiverse
With this file you will be able to print bit with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on bit.