Smooth-On
Shell Shock Slow Brushable Liquid Plastic

Shell Shock Slow is a thixotropic plastic that self-thickens when mixed and can be brushed onto a variety of surfaces or into rubber molds. When Parts A and B are mixed in proper proportion (1A:4B by volume or 1A:5B by weight), material cures at room temperature with virtually no shrinkage to a hard, durable plastic that exhibits good compressive and flexural strength. Fully cured castings are rigid and can be sanded, primed and painted. Shell Shock is ideal for making fast, lightweight rigid molds for creating silicone appliances and effects. You can also brush a "gel coat" into a rubber mold and back it up with rigid foam, creating a highly detailed lightweight casting. Shell Shock can also be brushed onto foams as an impact resistant coating that can be sanded, primed and painted (minimum 3/8" thickness recommended). Shell Shock Slow has an 8-minute pot life with a 5-hour cure time at 3/8 in. thickness.