Alumilite is a premium, 2 part urethane resin used for casting. Casting is the process of filling a void with a solid resin once cured. Examples include Worthless Wood (wood and resin combinations), pine cones cast in resin, and solid colored resins. Casting with Alumilite is best done under pressure using a pressure pot and an air compressor. Molds are required to hold the liquid resin until it has cured. They can be made from many materials including white plastic cutting boards, silicone, cardboard, basically anything that can be made leak proof. For proper use of Alumilite, you will also need a scale since the ratio is 1:1 by weight, not volume. Please visit my Alumilite Casting Resources section in the Help Center for mold plans, mixing videos, and other related videos on casting.