Rebound™ 25 is an easy-to-use platinum-cure silicone rubber which self-thickens for making brush-on molds of almost any model. Mixed 1A:1B by volume (no scale necessary), Rebound™ rubber can be applied with a brush or spatula to vertical surfaces without sagging and will cure with negligible shrinkage to a flexible rubber. Rebound™ 25 is soft, flexible and is good for making molds of models with deep undercuts. Depending on model configuration, Rebound™ 25 can be inverted as a glove molds. We always recommend customers use Viscosil (Smooth-On brand name: Thivex) to thicken Rebound 25 before use to avoid as much material runoff as possible.