I have 2 objects. One is a big cube and one is a small cube (50% the size of the big cube). I have placed the small cube with in the big cube. Now what I would like to do is to make the small cube become an inner cavern with in the big cube.
What I mean is that I want to use the small cube as a sort of 3d eraser and take away mass from the big cube so that a small little cube room is left inside.
How is this possible?