Hi,

In fact I followed the tutorial on this site to make a 3D object with Art Of Illusion, and modified the glass object of the exported .obj file with these lines : I took the colour 'flltgrey' from another SH3D window object. But mine is not rendering the same.
The tutorial does not give way to change the transparency of the object and the window I choose seems to have no more info than coordinates and 'unsemtl' values...

I found on some other models that you can specify a mtl library file inside the .obj file, but it seems not to be the case of most windows used in SH3D, like the example I took (called 'doublewindow 126x163').

...but I don't understand what I need to do with my .obj file to get the same material as the library provided windows...