Making a durable lightweight architectural element or display piece is possible using duoMatrix NEO polymer-modified gypsum and Matrix Chopped Glass. A ReoFlex 30 mold is prepared with Mann Ease Release 2831 release agent. A face coat of NEO is brushed onto the surface of the mold, then a backup layer of chopped glass reinforced NEO is applied as a backup coat. The end result is a flawless reproduction.