How to Use Mudcrack Posted on August 6, 2020September 20, 2021 by Kelsey Wilcox Cone 6 White ClayCone 6 Speckled ClayCone 6 Dark Brown ClayCone 10 White ClayCone 6 White ClayCone 6 Speckled ClayCone 6 Dark Brown ClayCone 10 White ClayGlaze will perform differently based on clay bodies and firing temperature used. The choice of clay body, thickness of glaze application, firing process and temperature will affect the fired results. Always test in your kiln and on your clay body.