The file 'Bird In Cage. Optical Illusion 3D Printer Model' is (stl) file type, size is 229.1KB.
This is a trick, an optical illusion: when the cage is rotated, the bird disappears and appears. The part is completely flat and printed with the same material.
Video: https://youtu.be/3Kf7ok1M2zE
Bird_in_cage_LL_56mm.stl | 511.8KB | |
Bird_in_cage_L_95mm.stl | 421.8KB |