Glad you liked it. I'm working up a print-size render of it to take to my next art show. Good to hear that the normals were indeed at the root of the problem. If you're in p6, give the "Normals_Forward" a try. I believe you'll get the same results with much less work. While the manual doesn't even mention this setting, I believe it's a signal to Firefly to examine each face and if the normal faces away from the camera, reverse it. In other words, it will always assume it's looking at the outside of the face.