Slightly tweaked the OpenSCAD model to fix zero thickness faces in the model caused by difference, using a small "epsilon" value to do this.

Customizable hole cap/plug. Using the ThingiVerse customizer or OpenScad, you can create hole plugs/caps for many different purposes. Piggy Bank plugs, cover up holes in metal/wood, desk etc.

Design originally came from the need for a Piggy Bank plug, then I decided to make it dynamic since I need hole caps/plugs fairly often.

You can make the flange bigger, or smaller, change the size hole, the length of the catches, number of catches, thickness of catch, basically nothing is hard coded. One thing to keep in mind is that the dimensions are in mm.