The Smooth-Cast Semi-Rigid line of low-cost semi-rigid urethane casting resins cure quickly to semi-rigid plastics that offer exceptional strength and impact resistance. New Formulations – New Look! Smooth-Cast 45D is newly reformulated with a translucent white appearance and improved physical properties. All Smooth-Cast semi rigids are now mercury free and phthalate free. These plastics are easy-to-use (mix ratio is 1A:1B by volume) and have low viscosities for minimal bubble entrapment. Vibrant colors are possible by adding SO-Strong, UVO or Ignite colorants. These semi-rigid plastics are good for making impact resistant prototypes, models, toys, props, climbing holds, etc.

• Liquid urethanes are moisture sensitive and will absorb atmospheric moisture. Materials should be stored and used in a warm environment (73°F / 23°C). Mixing tools and containers should be clean and made of metal, glass or plastic.
• Mixing should be done in a well-ventilated area. Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk.

Specifications

Common questions