Speedball Underglazes – Cone 05–10 Vibrant Colors for Greenware & Bisque

Speedball Underglazes are trusted by professional ceramic artists and educators alike for their exceptional vibrancy, value, and versatility. Available in 48 rich colors and multiple sizes (2 oz and pint), these underglazes are formulated for superior brushability and consistent performance across a broad firing range—Cone 05 to Cone 10.

Use on greenware or bisque to achieve soft, velvety matte finishes when left unglazed, or apply a clear glaze for a richer, more vibrant surface. The new formulation improves ease of application, making these underglazes ideal for detailed brushwork, sgraffito, and layering techniques.

Features:

• 48 bright, bold, and rich color options

• Available in 2 oz and pint sizes

• Apply to greenware or bisque

• Soft matte finish when unglazed

• Intensifies in color when glazed

• Broad firing range: Cone 05–10

• New formulation with improved brushability

• Suitable for studio, classroom, or production work

*Color performance may vary depending on firing temperature and glaze. Always test for specific results.