Two-part platinum-cure silicone rubber.

For accurately measuring Parts A and B.

Use a clean container and mixing tool.

Your pattern and a suitable containment area.

Recommended for removing trapped air.

Safety glasses and vinyl gloves.

Prepare Your Model

Make sure the model is clean, dry, and free from contaminants that could interfere with the silicone cure.

Some materials can cause platinum-cure silicone to remain tacky or uncured. When compatibility is uncertain, perform a small test first.

Measure the Silicone

Bring the material to room temperature, approximately 73°F (23°C), before use.

Accurately weigh Parts A and B using a gram scale according to the specified mix ratio.

Mix Thoroughly

Pre-mix Part B before combining.

Mix Parts A and B thoroughly for approximately 3 minutes. Scrape the sides and bottom of the container several times while mixing to ensure the components are completely incorporated.

Remove Air

Vacuum degassing is recommended for the best results.

Place the mixed silicone in a vacuum chamber and allow the material to rise, break, and fall. Continue vacuuming for approximately 1 minute after the material collapses.

Pour the Mold

Pour the silicone slowly into the mold box.

For best results, pour from one location at the lowest point of the containment area and allow the silicone to flow naturally around the model. A slow, consistent pour helps minimize trapped air.

Allow to Cure

Leave the mold at room temperature until fully cured.

Demold & Start Casting

Once fully cured, carefully remove the silicone mold from the model.

The clear/translucent material makes it easier to see the model inside the mold and determine where cuts or separations should be made.

New silicone molds naturally provide good release characteristics. For wax and gypsum, a release agent is generally not necessary.