An absolute must-have when working on fabrics such as the sock-liner of shoes and other soft fabrics. When heat-set properly, this Fabric Medium will help keep your fabrics nice and soft after being painted. Directions: Mix GAC-900 with Angelus Acrylic Paints in a 1:1 ratio. Apply multiple coats until you obtain full and even coverage. Allow paint to completely dry. Heat-set using a heatgun at 300º F for 3-5 minutes (this step is REQUIRED).