Polytek EasyFlo 60 Liquid Plastic (3.8lbs) Super low viscosity, 1A:1B by volume EasyFlo 60 Liquid Casting Plastic is ideal for decorative objects, sculpture reproduction, prototype or production parts, props and displays, tools, models, duplicate masters and more 2 to 2.5-min. working time and a 15 to 30-minute demold time Easy to color cast with PolyColor dyes and can be filled with dry fillers such as bronze powder for stunning cold cast metal parts