
Question: I recently obtained a vacuum chamber and pump to get the air out of my silicone rubber. When I vacuum the material (after mixing Parts A + B), my silicone takes forever to de-air and I still end up with some bubbles in my silicone rubber. Is this normal?
Answer: It sounds like your vacuum pump is not pulling enough of a vacuum to quickly and efficiently get the air out of your silicone mix. After your mixing container is placed in the vacuum chamber and the vacuum pump is turned on, the... Read More»
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For the absolute latest on new mold making and casting products, application, and developments, this is the place to go! Silicone mold rubber, urethane mold rubber, liquid plastics, casting resins, foams, duoMatrix. and more.
Find a DistributorOur mold making and casting products are available from distributors all around the world!
How-to Guides
Articles to guide you step-by-step through the mold making and casting process, achieving special casting effects, and more!Media Gallery
Photo galleries, step-by-step photo tutorials, video tutorials, and more showcasing our extensive selection of mold making and casting products!How-To Seminars
Inspiring, educational, and potentially life-changing. Smooth-On and its distributors conduct how-to seminars that will show you materials, methods and techniques that will open your mind to a whole new world of material possibility. Click here for to find out what is offered, when and where.
I Am an Educator / I Am a Student
Smooth-On works with teachers and students at colleges and universities to educate people on how liquid rubbers, plastics, foams and other materials can be used for an infinite number of applications.















































