Mold Your Imagination! 🎨 Perfect for wax, gypsum, resins, and low-temp metals. Craft molds that withstand the test of time and usage. Easy to store and handle, weighing only 32g. Designed for minimal shrinkage, ensuring perfect replicas. Ideal for both beginners and seasoned pros to experiment. Low Long Term Shrinkage Heat Resistant up to 450°F Tear Resistant Smooth-On Mold Star 30 is a premium silicone mold-making rubber that cures into a soft, strong, and tear-resistant material. With exceptional heat resistance and low long-term shrinkage, this trial unit is perfect for creating durable molds for various casting applications, ensuring your projects are both professional and precise.