Smooth Cast® 320 series plastics are ultra-low viscosity resins that yield castings that are off-white. Vacuum degassing is not necessary and they offer the convenience of a 1:1 mix ratio. Your fully cured castings are machinable and paintable. Smooth-Cast® plastics offer tremendous versatility and economy. They are easy to use and you can add different colors and/or fillers for an infinite variety of mind-blowing effects. Perfect for casting detailed models, props and cast effect pieces.