Stephen Hawking - Lithophane

Print with 100% infill, white filament works very well (transparent filament works sometimes) and a dark filament is not worth trying.

After it's printed, hold it against a light. It's based on the second image from here:
http://people.com/human-interest/stephen-hawking-dead/

The file is relatively large, don't surprised. The preview on the photo is noisy because my build platform is actually PCB with holes, so my bottom of the prints has a lot of dots which requires post processing, which on the photo was not done yet.

The better print/photo is done by https://www.thingiverse.com/TheInternet/about

R.I.P.