Height adjustable Raspberry Pi camera mount. The rail is designed with a 43mm center-to-center hole layout to mount directly to two existing M3 bolt holes in the rear right corner of the 4Max Pro. The arm mounts to the sliding (t-slot) rail with 2x M3x12mm bolts and matching nuts. I used holes 1 and 3 from the bottom, with hole 3 slide all the way to the top of the rail. Printed with support touch bed only in ABS.

I may update this later with other mounting locations as I get Octoprint setup. While it's a bit weird to view the camera feed from the back, it is completely out of the way and easy to setup. The cable goes out the back of the case and behind the enclosure wall. (I didn't actually use the rear case part as my camera module didn't fit with it. I used two dots of super glue to hold the module in place. It works great.

I added a thicker rail design per merseydiver's suggestion.