Thingiverse
Circle Illusion
by Thingiverse
Last crawled date: 5 years, 9 months ago
Circle Illusion, Optical Illusion
There are various optical illusions, of which the spinning circles make a worthwhile 3D design project. One has many opportunities to sketch and offset circles. The present design is just an example. It creates a dual conic illusion when spun slowly (refer to the GIF demonstration below).
The circular board has a diameter of 120 mm. The filament should be changed at about 70% completion or after the base is printed, to create the color contrast. Of course, white or light-colored filament can be used to print the whole board. Once finished, the crescent patterns can be painted using another color.
Thanks to the natural warping, the board can be spun on a smooth surface without a stand. If so desired, a stand can be used to raise the board for spinning. Have fun!
References
https://en.wikipedia.org/wiki/Illusion
There are various optical illusions, of which the spinning circles make a worthwhile 3D design project. One has many opportunities to sketch and offset circles. The present design is just an example. It creates a dual conic illusion when spun slowly (refer to the GIF demonstration below).
The circular board has a diameter of 120 mm. The filament should be changed at about 70% completion or after the base is printed, to create the color contrast. Of course, white or light-colored filament can be used to print the whole board. Once finished, the crescent patterns can be painted using another color.
Thanks to the natural warping, the board can be spun on a smooth surface without a stand. If so desired, a stand can be used to raise the board for spinning. Have fun!
References
https://en.wikipedia.org/wiki/Illusion