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Cracking the Kiln LIVE | The #1 mistake made in your bisque fire | Ceramic Materials Workshop

3.0K views· 132 likes· 75:05· Jan 19, 2026

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Ever opened a kiln only to find a "pot-splosion" or mysterious cracks? We’ve all been there. The bisque fire is one of the most misunderstood parts of the ceramic process, but it’s the foundation for a perfect glaze result. Matt is going LIVE on the Ceramic Materials Workshop (CMW) YouTube channel to break down the science and explain the inconsistencies. 🔬 What is Bisque Firing? This is the first firing, and it’s like pre-baking your cake. It hardens the clay, making it strong enough to handle and glaze. But importantly, it keeps the clay porous, so the glaze can soak in and adhere properly. Know a friend who would benefit from this live stream? Share this announcement with them! The more makers we have, the better the discussion will be. ★★We can't wait to see you there!★★ Want to learn more? ➤ https://linktr.ee/ceramicmaterialsworkshop Ceramic Materials ​Workshop is a place online to understand and explore how and why our Clay and Glazes work (and don’t work). Our materials speak for us in the home and gallery. It benefits us to learn about how to speak through our materials. Mastering the skills of clay and glaze performance helps every ceramicist, become their best self in the studio. ➤ You can also check out all of our resources on our website at www.ceramicmaterialsworkshop.com #ceramics #ceramicglaze #pottery #glaze

About This Video

In this live episode of Cracking the Kiln, I’m digging into the bisque fire—the most misunderstood “boring” firing that quietly determines whether your glaze results are clean and predictable or a total mess. If you’ve ever opened the kiln to a pot-splosion, mystery cracking, or brittle ware that seems fine until glazing day, this is exactly the conversation we need to have. Bisque isn’t just “get it to cone X.” It’s a controlled burn-off and structural transition that sets up everything that happens later. I frame bisque as pre-baking your cake: you’re hardening the clay enough to handle, but you’re also preserving porosity so glaze can wet, soak in, and adhere consistently. In the live breakdown, I focus on what causes inconsistency—especially the #1 mistake people make in bisque—because it shows up as uneven absorption, cracking, and failures that get blamed on glaze when the real problem started earlier. The takeaway is simple: treat bisque like a materials process, not a checkbox, and you’ll get fewer surprises, better glaze application, and far more repeatable firings.

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