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Smooth Cast 300 is a liquid plastic ,ultra-low viscosity casting resin that yields castings that are bright white and virtually bubble-free. Vacuum degassing is not necessary. It offers the convenience of a one to one mix ratio (by volume). 3 minute pot life: 10 minute demold time: Mixed viscosity 80 cps: 70D shore hardness Fully cured castings are tough, durable, machinable and paintable. Read MSDS before use – Adult Supervision Required. Keep Out of the Reach of Children – for more information visit www.smooth-on.com