Customizable Blind Hole Cover Plate

After a renovation we were left with an ugly hole in the ceiling of our kitchen that needed to be covered. Probably you can also buy a coverplate but it might be difficult to get the dimensions exactly right. So I made my first dive into OpenSCAD and created a customizable one. Besides, it is more fun to make something yourself and the 5.75m of filament it used is likely to cost less than what a factory-made one would cost in shipping alone.

I may want to make some more and perhaps this is