Molds are used to produce everything from objects of art to kitchen sinks—both as a step in unique original creations and to make multiples. When you have a three-dimensional piece to duplicate, creating the right type of mold from the original is the first step. Whether you work large or small, in metal, resin, plastic, or glass, our moldmaking classes give you a great foundation and teach you which technique and which materials to use for the best results.
Upcoming Bay Area Moldmaking Courses
Browse below for all upcoming Moldmaking classes. Please note that due to safety concerns surrounding COVID-19, all upcoming Crucible classes are in-person with strict health and safety policies in place for students, faculty, and staff. You must review all Crucible policies before registering.
Moldmaking and Casting with Plastic
Learn the secrets of plastic casting using flexible molds, just like the ones that professionals use for product development. You will make molds and use them to create plastic...
Meet The Moldmaking Department Head: Billy Hiebert
Billy Hiebert began moldmaking when he received his MFA for sculpture in 1965 from CCA here in Oakland. After a few years of sculpting with metal and stone, and teaching sculpture and design, he dove into industrial processes involving molding and casting. He operated a full-time business offering model making, molding, and casting to both artists and industrial clients. Now, Billy teaches both moldmaking and stone carving at The Crucible.
Moldmaking Adult Classes
The Crucible offers a wide variety of adult classes teaching different moldmaking techniques. Whether you want to learn the fundamentals of making multiples or how to work with different materials, The Crucible has you covered. See the complete list of moldmaking classes offered below.
Brush-on Molds with Support Case
In this class, you can make the kind of mold used by model makers, foundries, sculptors, and other professionals. You will learn how plaster and silicone work together in making molds for casting a variety of materials including wax, plastic, and gypsum products. Class will begin with information that will help you in making or selecting an object to mold that is compatible with the process and size limitations. Your mold may be used in another class or stored for use in the future.
Moldmaking & Casting with Plastic
Learn the secrets of plastic casting using flexible molds, just like the ones that professionals use for product development. You will make molds and use them to create plastic reproductions. Personal projects are welcome, subject to size limitations.
Moldmaking II: Silicone Rubber
In this class, you will learn to make silicone molds, the kind used by model makers, foundries, sculptors, and other professionals. These molds are suitable for casting other materials including concrete, wax, resin, and silicone. Molds can also be stored for later use in another class that uses wax castings. A plaster case is made to support the silicone material and help hold its shape. Personal projects are welcome, subject to size limitations.
RECOMMENDED PREREQUISITE: Moldmaking with Silicone and Plaster
Moldmaking Youth Classes
We do not currently offer youth classes in our Moldmaking Department. You can see all The Crucible’s offerings for youth here.
Being Prepared For Your Moldmaking Class
Moldmaking classes are held on the first floor of our building. Please contact us if you have any questions about accessibility and we will be happy to accommodate.
Students must arrive for class in all-natural fiber clothing, long pants, and closed-toe, closed-heel shoes with socks that protect up to the ankle. Long hair must be tied back. Nylon, polyester, spandex, or other synthetics are not allowed around machines, equipment, or processes that can produce hot fragments, sparks, or flames.
The Crucible requests students always arrive in studio-safe clothing when working. Layers are encouraged as the studio can be very cold or very hot.