This small rugged phone has a nice rubber case built-in, but the fancy backplate is unfortunately glass. As expected it got spider web cracks in the first year and later chips of glass started to drop from it.

So there was no other excuse, I had to clean it out with a screwdriver (it was kind of easy) and then 3D scan and postprocess the model to create the replacement part.

Disclaimer: the gcode does not fit perfectly, but with one minute sandpapering you can make it fit.