180x industrial lens focus mount

thingiverse

This is a holder for one of the "180x industrial microscope lens" that you see on AliExpress. It fits around the 50mm ring and requires three M3 bolts (I use 9mm length) to secure it so that you can rotate the zoom ring. On one side, there's a hole to take an M8 threaded rod, which should probably be tapped rather than forced in. If you look at the scad, you'll see a `rotate(30)` which basically rotates the three holes around the ring, allowing you to move them in relation to the M8 hole. There's also a T-piece (cube with two holes in!) that takes a vertical rod and nut to move the camera+lens up/down to focus. See also my related CS mount adaptor and lamp clip on Thingiverse and RaspberryPi ZeroW CS mount case.