Mid-Fire Glazes
Mid-Fire Glazes
Both are certifications received from the Art and Creative Materials Institute as a result of extensive toxicological testing. AP is for products that contain no materials in sufficient quantities to be toxic or injurious to humans, including children, or to cause acute or chronic health problems. CL is for products that are labeled in accordance with the chronic hazard labeling standard and are certified to be not hazardous if used in accordance with directions on packaging.
Speedball glazes and underglazes have a shelf life of 2 years after manufacture, however when properly stored and maintained they can last much longer.
To get the best results with Mid-Fire glazes, we recommend bisque firing to cone 05/04 and doing a test tile on your clay body and preferred firing method. We do not recommend any slow controlled cools, as this can effect the final appearance of the glaze.
Yes, however the finished appearance of many of the glazes may change at higher temperatures. We recommend doing test tiles and your own dinnerware safety testing prior to use on any finished pieces.

color overview
Prisma Green is a glossy, opalescent glaze that brings a heightened level of sophistication to any ware! Green sets the tone for the event, but it also promotes various undertones as it shifts its position in the light. Prisma Green is great with a standard application and is also great for layering with other colors.
| Cone 5 Results | Glossy green |
| Cone 6 Results | Glossy green with purples and blues; transparent green where thin |
| Recommended Layers | 3 heavy coats |
| Notes | No slow cool, great for layering with other glazes |