Sign Plywood is known as MDO Medium Density Overlay plywood is used for signs in 1/2" or 3/4" thickness. MDO is made by bonding a resin impregnated paper to the plywood surface which improves resistance to checking and splitting. It is then primed & painted. (Regular plywood is not used for signs due to the rough grains).
Send your files to Info@HeroSigns.net to further discuss your project.