Glaze defects can ruin the appearance and functionality of ceramic pieces, but understanding their causes can help prevent them. One of the most common issues is crawling, where the glaze pulls away from the surface, often due to dust or grease on the bisque. To avoid this, ensure your piece is clean before glazing.

Pinholes and bubbles occur when gases escape during firing, leaving tiny holes. This can be minimized by proper bisque firing and using well-mixed glazes. Crazing, a network of fine cracks, happens when the glaze and clay body expand at different rates. Adjusting the glaze配方 or using a compatible clay can solve this.

Shivering, where glaze flakes off, is caused by excessive compression. Using a glaze with a lower thermal expansion rate helps. Lastly, blistering results from over-firing or trapped air. Control kiln temperature and ensure even glaze application.

By addressing these common issues, potters can achieve smooth, durable, and visually appealing finishes. Proper preparation, testing, and firing techniques are key to flawless glazing.