Ceramics
Ceramics
Underglaze fires matte and is not sealed unless a clear glaze is applied and fired on top of it. Additionally, underglaze can be similar to a paint in that the fired color is similar to the color when fired. Glazes will melt and seal the piece without the use of a clear glaze and often fire to a very different color than when applied.
Yes! You can mix the glazes prior to applying to create your own custom colors, however we always recommend firing a test tile to ensure the final result is your desired shade.
Speedball glazes and underglazes have a shelf life of 2 years after manufacture, however when properly stored and maintained they can last much longer.
We recommend bisquing to cone 05/04 for Speedball glazes and underglazes.
An Inside Look
Our dedication to quality is evident in every facet of our process in manufacturing our popular line of glazes and underglazes. After being mixed by one of our trained technicians, each batch is run through an extensive quality control process to verify viscosity and color, including test tiles being fired overnight prior to filling.