Sensor mold that you can apply to your trackball designs using a Tindie PMW3360. Also works with Tindie version PMW3389.

This is a "Fitting" version of the mold to the sensor. When you line it up the plastic cover over the sensor will probably want to stay in the 3D print. A "snug fit". To get it out, you will probably have to push through the optical sensor eye hole to get it out if you need to disassemble for whatever reason.

I've also added a cut base version that accounts for any soldering done to the PMW sensor. Still fits and holds into place just as well as the full size.

Enjoy!!

Built this using 4 cylinders and 2 rectangles, on top of a thin 4mm square. Since the optical plastic cover is 3mm thick I made it deep enough to house that part of the sensor. Then lined up the screw holes.