The Smooth-Cast™ Semi-Rigid line of low-cost semi-rigid urethane casting resins cure quickly to semi-rigid plastics that offer excellent impact resistance. These plastics are easy-to-use (mix ratio is 1A:1B by volume) and have low viscosities for minimal bubble entrapment. These semi-rigid plastics are good for making impact resistant prototypes, models, toys, props, climbing holds, etc. Smooth-Cast™ 66D is a grey resin with a 7 minute pot life and 60 minute demold time. NOTE: Do not use Smooth-Cast® 66D for roto casting. Available in trial (1.9 lb.) sets and 2 gallon (15.4 lb.) sets.
