I started this lamp shade with the general shape in mind an the wish to play with thickness for letting the light draw things on it. I wanted the light to make it look different. While playing around in Blender I was hesitating between sharp edges to make the polygons realy visible, or smooth the edges to make them less obvious. The the idea arrived to make it smooth an let the light draw the edges.
I really like the roughness of the light passing through, making the layers and defects really visible, giving imperfections that makes it look like a crafted object and not a printed one.