3d Sign Factory uses CNC routing to fabricate custom signage from expanded polystyrene (EPS) and high-density urethane (HDU). After cutting, each component is professionally sanded, primed, and coated in a controlled spray booth using UV-stable, weather-resistant paints. EPS provides a lightweight core suitable for large, complex shapes, while HDU offers high dimensional stability and resistance to moisture, cracking, and temperature extremes.