The file 'Illusion Face 3D Printer Model' is (STL) file type, size is 14.9MB.
A simple yet effective illusion where the face seems to orientate to the viewer.
View the video to get a good look:
https://www.youtube.com/watch?v=3_YqGBlCFZM
Or check out the illusion virtually on Sketchfab: https://sketchfab.com/models/3ada924493804c8f9817bafe44685533
Most people with always see a positive face in a negative face but
the effect works best with a light source shining on it from the bottom which tricks it as if the light is shining from the top on a positive face. Additionally the standing version also works with a light shining through it from the back. (Like a lithophane effect.)
Remixed from my Melt Face: http://www.thingiverse.com/thing:651829
I squashed, cropped, smoothed and of course inverted it to get a really good illusion effect.
IllusionFace-Bowl.STL | 4.1MB | |
IllusionFace-Standing-ca1.1mm.STL | 7.7MB | |
IllusionFace-Standing-ca2mm.STL | 7.9MB |