The Basics Worbla’s Deco Art is a polyester pellet plastic used for sculpting and building dimension, as well as molding.  The Uses Especially useful as a flexible alternative to resign casting. The Specs Available in:             • 4.4 oz.                     • 14 oz. The Bottom Line The white pellets turn clear when heated, creating a material that's like plastic putty. Shape it by hand, with tools or use to build upon.