For internal-shape applications where a thin pour will completely fill the cavity without voids. A complete replica casting is quickly formed.
Roll tow equal-sized balls of catalyst putty and base putty and simply knead them together like dough.
Excellent for external shapes. Simply spread over master pushing down with fingers and wait for cure 8-10 minutes. You have 3 or 4 minutes of manipulation time - Therefore 14 minutes start to finish. You can also cast internal shapes and cavities but some pressure should be applied sush as a weighted object on top.