Another Scotch Yoke

thingiverse

This is a completely new design of Scotch Yoke mechanism. I had previously uploaded an example, however it was non-printable due to certain geometrical limitations. Lately another talented designer on Thingiverse named Sprik, produced an outstandingly printed version that utilized several creative and useful design aspects. I decided to test this particular variation and made a couple, but found that the main drawback lay in the utilization of printed pins for holding everything together, resulting in a rather fragile final assembly that didn't have sufficient structural integrity. The required tolerance level for producing these small cylindrical supports proved too loose on my 3D printer settings, thus making it nearly impossible to produce reliable prints. As an outcome, the crank and base started rattling badly, with each separate component getting separated fairly easily unless properly attached with adhesive materials.