Door viewer cover

This thing is a simple cover for the door viewer in my apartment. The cover is attached to a cylindrical base that fits exactly inside the viewer (my viewer inner diameter is half inch but you can change the cylinder diameter in the openscad file if necessary). The cover and the base are two separate objects that can be printed at the same time. The two connect with a hinge. If the connection is not strong enough, you can melt the back of the insert to make sure the two parts do not separate.