Hi all,

I've created a 6-sided conical-sweep prism-like object.  Unfortunately, 
I needed to control the angle at which the sides "cant" in, so I 
couldn't use the conical-sweep prism.

Nor could I use a series of polygons (well, I guess I could) because of 
all the translation/rotations necessary to get the sides to meet (the 
top and bottom are polygons because I only had to translate by a fixed 
amount along the y-axis...a known quanityt).

So, I created meshes for each side.  I could easily calculate the 
vertices and, with a few parameter changes (like height, width, length, 
cant angle) I can manipulate it as I desire.

However, now I want to put a window on the front face of this thing. 
Because it has to be the same shape as the front face (a trapezoid 
angled in the -z direction), I have to use polygons or meshes (again, I 
have less control when trying to make it a prism and 
rotating/translating it).

To do this, I somehow need to cut a hole into the front-face of this 
object...and I'm not sure how to do it.  So, how does one take a 
surface, like a plane, and cut a hole in it?  I thought I could simply 
use "difference" but then both objects go away and I'm left with some 
scattered dots resembling the outline of my window.

Thanks.
-Jim

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