Speed and accuracy rarely coexist in mold making, but this fast demold tin-catalyzed silicone is formulated to deliver both. It is designed for rapid prototyping shops, jewelry designers, and model makers who cannot afford to wait overnight for a mold to cure and need to move from master pattern to first casting within a single working day.
The two-part liquid rubber features a moderately low viscosity that wets patterns aggressively and replicates micro-details—engraved lettering, filigree, or textured surfaces—with high fidelity. Its pot life is intentionally short, typically 7 to 8 minutes at room temperature, which demands efficient mixing and pouring but rewards the user with extremely fast cure: parts reach demoldable Shore A 15 hardness in as little as 2 hours. This means a mold can be prepared in the morning, and prototype wax, gypsum, or fast-cast urethane copies can be pulled by lunchtime.
The cured rubber is exceptionally soft and pliable, allowing it to be peeled back effortlessly from rigid originals and deeply undercut patterns. With an elongation at break exceeding 600%, thin mold sections withstand significant distortion without tearing, which is essential when pulling the first copy from an unseasoned mold. Linear shrinkage is kept at or below 0.5% after full post-cure, an acceptable tolerance for fit-check prototypes, artistic editions, and short-run production where absolute metrology-grade accuracy is not required.
Because of the rapid reaction, proper release agent application and careful weighing of the two components are critical to achieving consistent results. We provide detailed technical guidance on adjusting the mix ratio and workshop temperature to fine-tune working time for larger molds. Pigments can be added to the liquid silicone to visually confirm thorough mixing. This tin cure silicone is an invaluable tool for educational labs, dental stone casting, candle mold prototyping, and any creative workshop where project velocity matters. By eliminating unnecessary idle time, it helps you compress the iterative design cycle and accelerate time-to-market.
