This slipmat is also a phenakistoscope, an early animation device that creates the illusion of a moving picture when a camera's shutter blurs its rotation.
The spokes of the spiral will appear to break apart & rejoin when seen in the right conditions at 33RPM.
To view the illusion, watch the spinning disc through your camera phone. You can also use a strobe light app to see with the naked eye. Detailed viewing instructions here.
Design by Drew Tetz.
Black ink on 9oz white felt glazed bottom slipmats, printed in the USA by Hank Freeman.
See this slipmat in action on instagram here.