bit

thingiverse

Most recent versions of all logics are available at https://www.thingiverse.com/thing:2829196, I suggest downloading from there. This is a single bit memory gate created using only links and pivot points based on the papers linked below. The SCAD file can be found in the parent thing 4 bit register at http://nextbigfuture.com/2016/04/molecular-mechanical-computer-design.html and http://www.imm.org/Reports/rep046.pdf.