Catalyst Wedges are ergonomically designed to fit in your hand allowing a direct interaction with your work.  Designed for use with heavy-bodied paints, Catalyst is at home with oils, acrylics, and water-miscible oils. Because they are heat-resistant, they excel with encaustics. Artists are using them with plaster, clay, and even frosting. Made of FDA-approved silicone, Catalyst Blades and Wedges are great for food crafting. The silicone is easy to wipe clean and is solvent resistant. Clean up in most cases can be done with mild soap and water. Dried paint can be peeled off the silicone surface.