Applied directly to the back of embossed metal, MercArt Embossed Metal Backing Paste acts as a filler to prevent damage to the raised metal. You won't have to worry about your embossed designs being smashed down during polishing or handling. The filling paste adheres to metal, glass, wood, plastic, and paper. It dries quickly and continues to harden over time. The fine applicator tip makes the paste simple to apply without a spatula.