Illusion Fidget Spinner

thingiverse

The Magic Orb is a four-sided puzzle toy with four unique visual illusion attachments. 1. Circles - Spin rapidly and view under bright lights for optimal results. You'll see rings of circles spinning in various directions! 2. Crater - Spin slowly and squint to create the illusion of a 3D crater, where the sides appear to rise up and the center becomes the bottom of a hole. 3. Spiral - Spin at a moderate pace and stare at or near the center for about 20 seconds before looking quickly at another object. You'll see it either grow or shrink! Reverse the spin direction for an opposite effect. 4. Benham - Spin rapidly and observe the distinct bands. Colors such as red, blue, and green should appear! Spin in the opposite direction to reverse the color bands. **Watch this animated example of the circles disk at http://gph.is/2AoQgtx**