High density CORAFOAM® (HDU) is an innovative polyurethane substrate used for a variety of applications in the signage, theming and modeling in aerospace, composite, architectural and design industries. With its excellent workability, grain-free consistency and broad range of densities, CORAFOAM® provides solutions to craftsmen and engineers alike. These characteristics, combined with polyurethane natural resistance to atmospheric agents, most solvents, and moisture, make CORAFOAM® polyurethane an ideal replacement for wood and other materials in signage, patternmaking, composite layup tooling, thermoforming, and prototyping applications.