Speedball Underglaze Test Tile Poster
Speedball’s Underglaze Test Tile poster is the perfect addition to any pottery studio or classroom! This beautiful layout not only adds an eye-catching piece of artwork to your workspace’s wall, it serves as the perfect reference for ALL thirty-six Speedball Underglaze colors. Showcasing 108 total test tiles all handmade and fired in Speedball’s lab, the Speedball Underglaze Poster accurately represents results at Cones 05, 6 and 10* both with and without the use of the appropriate Speedball clear glaze. (17.875″x 23.875″)
*All Speedball Underglazes are dinnerware safe when covered and fired as recommended with a dinnerware safe glaze. All tiles fired on white bisque tiles. It is always recommended to create your own test tiles to verify performance with clay body and firing schedule.