Raku is a low-firing process originally inspired by traditional Japanese techniques, particularly those associated with the Japanese tea ceremony and Buddhist philosophy. Western-style raku typically involves removing pottery from the kiln at bright red heat and placing it into containers filled with combustible materials. As these materials ignite, the containers are sealed, creating an intense reduction atmosphere that alters the colors of glazes and clay bodies.

The rapid cooling and drastic thermal shock inherent to the process often result in crackling—deliberate cracks that add texture and visual interest to the piece. While the original Japanese raku was shaped by spiritual and cultural influences, the Western adaptation focuses on the dramatic effects produced by this high-risk, low-firing technique.

Participants may bring up to 8 pieces, each no larger than 11 inches in height and 8 inches in diameter. Please note that Raku-fired pieces are not food safe.

You’ll have access to 12 specialty Raku glazes, including: Alligator Skin, Blue Crackle, Chameleon, Copper Matte, Copper Penny, Higby Water Blue, Imperial Blue, Gun Metal, Shogun, Moon Dust, White Crackle, and Raja.

Additionally, you can experiment with Naked Raku slip, Terra Sigillata (for greenware, pre-bisque firing), and Horse-Hair applications.

The workshop includes 4–5 firings in a state-of-the-art Laguna Raku Kiln and post-reduction chambers. You’re also welcome to bring your own combustibles to explore different atmospheric effects.

Food and beverages will be provided, and full staff support is available whenever you need it.

Please ensure all pieces are glazed and placed on the labeled shelving by Saturday night before the Sunday firing. Glazes must be fully dry before entering the kiln. Staff will be on hand to assist if needed.

Firings will take place in the parking lot.

We provide safety goggles, flame-resistant gloves, aprons, tongs, trash cans, and glazes. All shared equipment is consistently sanitized and disinfected. You are welcome to bring your own protective gear if you prefer.

Due to high demand and the preparation time required for participants’ work, we kindly ask that cancellations be made at least two weeks prior to your scheduled Raku firing to receive a full refund.

Cancellations made within two weeks of the firing are eligible for a 50% refund.

Unfortunately, we cannot offer refunds for cancellations made within one week of the firing. Please note that we also do not transfer or hold credits.

Thank you for your understanding and cooperation.

1. How often do you hold Raku firings?
   We hold Raku firings once a month.

2. Can you bisque my pieces before the Raku firing? If so, how much does it cost?
   Yes! We’re happy to bisque your pieces at no additional charge. Just bring your greenware by Tuesday of the week of your scheduled Raku firing. Your bisqued pieces will be ready by Friday afternoon, and you can glaze them on either Friday or Saturday before the Sunday firing.

3. Do you offer private Raku firings?
   Yes! Private Raku sessions are available for $700 for 5 hours. Additional hours are $200/hour.
   For more information or to book a private Raku firing, email us at hello@gbclayhouse.com.

4. What kind of clay can I use for Raku?
   Any clay body rated above cone 5 will work. We recommend using a clay that contains sand or grog to better withstand thermal shock.

5. Do my pieces need to be bisqued ahead of time?
   Yes, all pieces must be bisqued before the Raku firing. Greenware cannot be fired in a Raku kiln.

6. When can I come in to glaze my pieces?
   We send an email to all participants on the Monday before their scheduled firing with details on glazing days—usually Friday or Saturday before the Sunday firing. If you can’t make it on those days, reach out to us and we’ll do our best to accommodate another day.

7. Do you provide horsehair or slip for naked Raku?
   Yes, we provide both.

8. Can I bring my own combustibles?
   Absolutely! Just check in with our team so we can confirm they’re safe to use.

9. Can I use my own Raku glaze?
   Yes! Just make sure your glaze is fully dry—apply it at least 24 hours before the firing. We recommend bringing your glaze to the studio on glazing days so you can apply it here and have it ready for the Sunday firing.

10. Are Raku firings open to the public?
    Yes! We love welcoming new friends to join us.

11. I’m signed up for a Raku firing; can I bring a friend?
    Yes, your friend is welcome to attend as a spectator. However, we can only fire work that is registered for the session.