Image plane Thickness

[micheus]

Ah! Now I understood what you are talking about .
I was still with the image of the airport plant in my mind. So, never could imagine you would like to use one image plane with the image being viewed from the both sides.
That is something I had though to add sometime ago - after the last time I played with its code. I'm going to think about again.

From the top of my mind, it should has another way to get it too. Not sure if is faster. After extract the unmapped face, you select the other face; unwrap it; a just it's size in AutoUV window - which you uses the same image as texture - and flip the mesh. This way the back face must be equivalent to the front face.