Fridge Mounted Whiteboard Holders

This is a mounting bracket to hold a piece of sheet plastic to a metal surface (e.g. a refrigerator) for use as a whiteboard. I’m using a piece of sheet acrylic I had formally been using as a cutting surface when cleaning up prints. I spray painted the backside white but I’m not convinced that helps when attached to a white fridge. If you do so, do not use more than one coat as many spray paints will peel off acrylic when the second coat is applied.

The openscad file should be parametr