Smooth-On, Inc. offers a variety of mold making supplies, urethane and silicone rubber, urethane and epoxy casting resins
Explore the website to browse our products or see how they are used in a variety of applications.

Find a Distributor

Our 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!

How-To Seminars

Inspiring, educational, and potentially life-changing. Smooth-On and its distributors conduct seminars which will show you materials and techniques which will open your mind to a new world of material possibilities.
Click here to find out what's offered, when & 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.

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. ... Read More»