I have created a pseudo-cube that can be inverted--with parenting and rotations--to display a surprising inside.
I also would like to make the cube interact with a plane it falls on.
I can see that when I try to make the sides of the cube Rigid Bodies, I get the following message for some of them: "Rigid Body can't be child of a non compound Rigid Body."
And the animation does not work so good from then on. How can I fix that?