Optical Illusion Coaster

Enhance your tabletop with this drink coaster featuring a mesmerizing optical illusion known as the bulge or radial distortion illusion. This design, meticulously crafted in OpenSCAD, artfully arranges contrasting black and white squares to create the illusion of a curved or bulging surface, even though the coaster is completely flat. It's a functional piece that doubles as a conversation starter, intriguing guests with its eye-catching effect. The coaster measures 100 mm in diameter and is