Well, the material I will be using for the faceplate/lenses is plexiglas and is fairly rigid.

CNC stands for Computer Numerical Control.
It is a flat 4' by 8' table router where the router head movements are controlled by the computer.

The router armatures have the capability to do 3 dimensional routing but since we don't make 3d signs at work the boss did not opt for the modules to let the system do it so whatever I make on it will be pretty much flat.

What exactly did you have in mind?

Steve