Hi there,

I've found this problem with 3D rendering: I built a 3D volume made by
two elemental units;

the first one is a cuboid aligned with coordinates axis;

the second is a prism, shaped as an elliptic profile in plane XY, thus
rotated about Y axis and traslated on the top of the cuboid;

this complex volume goes well when rendered; the copy rotated about Z
axis presents some transparent faces: why?

I 'm trying to think where my mistakes are without success, I can't find the
cause: any help?

thanks a lot, best regards,
giuliano

Hi Steve,

yes, I can, but where I can upload my file?

the model is simple (2 unit) and not too big (20x20x6m);

the problem seems to be the rotation, but I don't tried many tests;

bye,
giuliano

(sorry for my english)