SO-CURE® Cure Accelerator is an additive designed to "accelerate" the cure time of some Smooth-On urethane liquid plastic products without significantly affecting ultimate physical properties. This allows for much faster Demolding of a part or casting from a mold. The accelerator is added to Part B by weight and should be thoroughly mixed with Part B before adding Part A. Important: Adding the accelerator drastically reduces the Pot Life (time you have to mix and pour material) of the liquid plastic product