I could think of 2 ways to obtain such an effect:
1) the faces of the box consist of e.g. 9 rectangular patches. The color for the 
middle patch uses an transparent alpha value.
2) use a texture with a single color and set the transparent alpha value for the color 
where needed.

regards
Paul

Jerome Post schrieb:

> Hi,
>
> I was wondering is there any way to do partial transparency
>
> I want to create a box where only a piece in the middle is transparent but I can�t 
>seem to figure out how to do it, if there is any way to create such an effect can 
>someone please clue me in.
>
> Thanks,
> Jerome
>
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