I made a C-shaped cam to test snap-fitting over the axle of my EM-1 which is on the workbench for a slipped shaft repair. The snap-fit was good but the prob with the C shape is that the gap is big enough to catch the switch flapper in reverse. I could have printed a 'plug' to fill the gap but figured since this is now a two-piece solution, I might want to try splitting it on a 45 across the running face of the cam.
I was having some issues getting a clean print for my screwed-together cam so I thought I'd try this snap fit idea. Could be the PLA I am currently running. The black PLA I used in the photo a few posts above seemed a little better for the small details in this print.