Bellows rail stop screw

If you buy a used bellows unit for your camera, there's about a 50/50 chance that one of the stop screws is missing (and the seller didn't mind to notice, of course). Luckily, as these stop screws regularly are made out of plastic, a 3D printed substitute is an adequate replacement.
This one fits for all bellows units with a ¼ UNC thread and dovetail rail, like Nikon, Olympus, or Canon models.

I recommend to print this using a layer height of 0.1 mm, ironing on all top surfaces, and 100% of infill. PA is a great filament choice (not PA-CF). PC may work nearly as well, PETG may be sufficient. Please do not use PLA or ABS - chances are that you will break the screw in use and divulse the plate without noticing it.