Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4131610.

I have always been fascinated with light and translucency. Also, given the fact that I get curious and bored rather easily, I decided to teach myself how to make a lithograph.

It hasn't been printed and tested in the real world, but it operates quite well in Blender (using subsurf scattering and volumetric material).