Quote - I only model quads which in reality is two triangles.

I would imagine you do. Poser loves quads. However, not all quads are created equal. That model pjz99 showed has quads on the faces that lead into the corners. But the edges aren't all square. That makes a huge difference to Poser apparently. If instead of making the edge go from the corner of the inside part of the cube to the corner vert of the outside cube he had gone straight across and put a vert on each vertical and horizontal edge and met it there, it would have smoothed differently in Poser. I hope to hell that made sense...lol. Instead of bringing an edge across diagonally, there would be a square face in each corner.

Laurie