Spinning Spiral Illusion Record Adapter

This record adapter model includes easy-to-grab handles and features the famous “spinning spiral illusion” on the top.  An easy print designed for .20 mm layer height with a .40 mm nozzle, and uses a simple color change in the slicer to get the spiral to print in a distinct color on the top layers.

This illusion is an example of what is called the "Motion Aftereffect" phenomenon, and this particular spinning spiral version of the illusion was invented by Jerry Andrus in the 1970's.  

Here's a quick/fun video that you can try which shows how dramatic the illusion can be: