Measure Plasti-Paste® 1A:3B by volume and mix carefully and thoroughly. Apply a coat of the Plasti-Paste® to the entire surface of the sculp. The Plasti-Paste® will bond to the Shell Shock® and help to provide extra strength. It is easy to build up a thickness of 3/8”(1 cm) by using Plasti-Paste® in combination with Shell Shock®.