Even for master ceramicists, working with clay means embracing failure, as various structural defects can ruin a piece at any stage of production. The most common issues encountered in the studio include: Shorter/S-Cracks: These develop at the bottom of a pot during drying or firing, usually caused by uneven thickness or failing to compress the base properly on the wheel. Bloating: Large bubbles or blisters that appear on the surface of the clay during a glaze firing, typically caused by trapped gases that couldn't escape because the kiln temperature rose too quickly. Craze Lines: A network of fine cracks appearing in the finished glaze layer. This happens when the glaze contracts more than the clay body during cooling, leaving a crackled texture. Understanding these flaws requires a deep knowledge of material science, forcing the potter to constantly refine their technique, adjust their drying times, and precisely calibrate their kiln temperatures to ensure structural success.
