Hello everyone new to the forum. I've listen and read I think just about everything available LOL. Still a way bunch more to learn. In any event I would say I'm descent at Rhino 3dm software. So I needed a wall cavity built up with traditional 2x4s Sheeted with plywood both inside outside and it included a cutout for a window. Basically a 10' x 8' cottage garage door that would swing in the middle, but be insulated like a wall cavity. Hinged on the outside with surface mount hardware. I modeled it in Rhino. Saved it as a .3ds format opened it in CA premier x10. Of course the size was wrong but that was easy to fix. The Douglas fir was imported correctly as the surface feature. However two things happened, it acted like a barn door and it would not place it within the wall. Only on the outside or the inside. So I tried a door opening and tried to force it in the middle, I really wanted this to work like a traditional door would work . no avail. Is there a way to change to file format coding to get the .3ds to act like a traditional door. Doc2 cottage door.pdf