The file 'Circle Heart Optical Illusion 3D Printer Model' is (stl) file type, size is 740.4KB.
Rotate it by 180° and the two hearts transform into two rings or hold it in front of a mirror.
For the best effect look at a 30° angle down to the object.
Inspired by the circle/square ilusion invented by Kokichi Sugihara, analyzed by Professor Dave Richeson, and posted by landisbs.
Here a video:
https://youtu.be/Wv8Hu0mdb4Y
1circleheart.stl | 767.5KB | |
2circleheart.stl | 1.2MB |