Shade for multi-head torchiere floor lamp

This is a replacement shade for my multi-head torchiere floor lamp. The original shades were made of ABS or some other translucent white plastic that had gotten brittle and yellowed over the years. 1 had completely disintegrated, and the other 4 would crumble with the slightest pressure.
So, I decided to put my new 3D printer to good use an make new ones! I modeled a form that I find more pleasing than the original boring "cup" shape, and printed 5 of them in white PLA. I'm using BAMTack! PLA,