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

• FAST-CURING BRIGHT WHITE CASTING RESIN – Smooth-Cast 300 is an ultra-low viscosity, two-part liquid polyurethane plastic that produces bright white castings with excellent detail. Its free-flowing formula fills intricate molds with ease for professional-quality results.
• VIRTUALLY BUBBLE-FREE CASTINGS – The ultra-low viscosity formula allows trapped air to escape naturally, eliminating the need for vacuum degassing in most applications. Create smooth, high-quality castings with minimal bubbles and outstanding surface finish.
• RAPID SET & DEMOLD TIMES – Designed for high productivity with a 3-minute pot life and 10-minute cure time, allowing you to make multiple castings in a short period. Ideal for prototyping, production runs, cosplay props, model making, and special effects.
• STRONG, RIGID & MACHINABLE – Cures to a durable Shore 70D hardness, producing rigid castings that can be drilled, sanded, carved, machined, and painted. The bright white finish also provides an excellent base for custom colors and decorative finishes.
• EASY 1:1 MIXING FOR PROFESSIONAL RESULTS – Mix equal parts of Part A and Part B by volume—no specialized equipment required. Compatible with most silicone rubber molds and trusted by artists, designers, manufacturers, prop makers, and hobbyists for detailed, reliable castings every time.