Teflon coated ceramic calibration die faces produce tough ding resistant outer skin. Cuts with hobby knives, razor blades and hot wire machines. Can be painted with water based, enamel, latex and silk flower paints. Accepts permanent markers, stickers and vinyl transfers. Accepts epoxy, water based contact cement, wood glue, craft glue, polyurethane wood glue, hot melt glue, spray contact cement and foam safe CA glue. Sandable edges and surface. Easily cut to shape to represent simple land elevation and landscape scenery for architectural designers and model landscape builders. Can also be used to create building structures. Will not absorb water and is acid free.