Consider the "x's" here as coplanar vertices:
x x x
x x x
x x x
the "x" in the center is shared by four squares.
Extrude the squares for four rectangular prisms, each of which shares one side
each with two other prisms.
here, the "r's" represent vertices on side of prism which will rotate:
x r r
x r r
x x x
How do I set this up so that the "R" prism can rotate without coming
loose from the other 3 objects along their coplanar sides?
If anyone has an answer to this, I'd sure appreciate it, thanks, Andy