In this how-to video, we demonstrate how to create a metal cold casting using the duoMatrix™ NEO polymerized gypsum system. duoMatrix™ NEO is a versatile polymer modified gypsum system that has superior physical and performance properties compared to regular gypsum products. NEO can take you in many creative directions by allowing you to make a variety of finish effects including different colors, metallics, glitters, stone and more (See smooth-on.com/neocolors and smooth-on.com/neoeffects for more information on coloring and adding fillers and powders to NEO to create casting effects).