Cone 5-6. AMACO Sahara High Fire Glazes are compounded to match porcelain and stoneware bodies. Glazes suitable for stoneware and transparent gloss glazes for translucent porcelain are included in this series. These are great glazes for dinnerware. In liquid form, AMACO Sahara High Fire glazes are ready-to-use while dry powdered glazes are mixed with water. Although these glazes may be applied on bone dry greenware for single firing, it is easier to apply them on low fire bisque.