Understanding Pottery Glazes: A Beginner's Guide
Glazing is where your pottery comes alive with color and texture. Understanding the basics will help you get the results you're imagining — and learn from the surprises.
Glaze is essentially a thin layer of glass that fuses to the surface of clay during firing. It can be matte or glossy, opaque or translucent, smooth or textured.
Understand bisqueware first. Most pottery is fired twice: once in a bisque firing (which hardens the clay without glaze) and once in a glaze firing. Bisqueware is the best surface for applying glaze — it's porous enough to absorb the liquid glaze.
Application methods matter enormously. You can dip, pour, brush, or spray glaze. Dipping gives the most even coat. Brushing gives more control but requires multiple coats (3 is standard). Always keep your glaze off the bottom of the piece — it will stick to the kiln shelf if it melts onto it.
Cone temperatures determine how a glaze behaves. Low-fire glazes (Cone 06–04) are brighter and more vibrant. High-fire glazes (Cone 6–10) tend to be more subtle and durable. Always use a glaze compatible with your clay body's firing temperature.
Layering glazes creates beautiful effects. Two compatible glazes applied over each other will interact in unpredictable ways — this is part of the magic of ceramics. Keep notes on what you apply so you can recreate successes.
