Versatile Ceramic Underglazes with Bold Color and Broad Firing Range

Speedball Underglazes give ceramic artists a dependable way to add rich, vibrant color to their pieces. These underglazes are made for consistent results across a wide firing range, from Cone 05 to Cone 6, and have also been tested at Cone 10. They are great for classrooms, studios, and professional kilns.

Apply to greenware or bisque for a smooth, matte finish when left unglazed, or bring out deeper color by adding a clear glaze. With excellent coverage and easy application, Speedball Underglazes work well for both decorative and functional pottery projects.

Key Features

• Bright, richly pigmented colors with smooth brush-on application
• Suitable for greenware or bisque pieces
• Fires successfully from Cone 05 to Cone 6 (tested at Cone 10)
• Soft matte finish without glaze; deeper color with clear glaze*
• Reliable, even coverage for detailed ceramic work

Perfect For

• Functional and decorative ceramics
• Surface design on greenware or bisque
• Low to high fire kiln work
• Artists who want bold color on clay
• Affordable, professional-grade ceramic materials

*Always test glaze compatibility before completing a project.