Wheel chock for model - (customizeable)

I was asked if my printer might be able to make a suitable wheel chock so that a pair of model cannon could be displayed. I added two cutouts underneath so that the chocks can be stuck down but the models turned out to be heavy enough not to need.

Making them parametric started as a bit of fun but the cutouts were an exercise in trigonometry.

Edit 25Jan23: The new Thingiverse staff have fixed customizer. Yaay! Well done team
I still recommend using OpenScad, but you can use TV's custo