🌀 Rotating Concentric Illusion – 3D Printed Optical Toy

This 3D printed model consists of two overlapping circular layers featuring concentric cut-out patterns. The pieces rotate relative to each other, creating a smooth optical illusion where the inner area appears to shrink, disappear, or transform as the rotation progresses.

Designed as a simple yet captivating kinetic object, the model combines geometric symmetry with motion to produce a dynamic visual effect.

Features:

• Two rotating concentric discs
• Optical illusion effect during movement
• Smooth, satisfying rotation
• Minimal assembly (print and stack)
• Ideal as a desk toy, demonstration piece, or visual experiment

Recommended use:

• Stress-relief / fidget toy
• Educational demonstration of optical perception
• Display object for 3D printing showcases

Print-friendly design suitable for most FDM printers.