Amaco | CO-13
CO-13 Mars Crystal Cosmos Crystalline Glaze
Mars Crystal is a highly fluid, dark brick red glaze with silvery, iridescent crystals that breaks darker over edges.
$57.19
Suggested retail price. In-store prices and availability may vary by location.
It performs best at cone 6 and can also be fired to cone 5. Apply 4 coats over cone 04 bisque. A normal medium speed firing is enough and no special cooling is needed, though a slow cool grows larger crystals. Cosmos glazes run, so stop the glaze about 13 mm (1/2 in) above the foot, fire the piece on a drip tray or soft bricks, and leave the inside or back of the form unglazed. AMACO rates the line food safe but does not recommend it for food surfaces because the glaze is not durable enough. Fire a test tile with each new batch.
- Cone 5/6 glaze, best at cone 6
- Opaque dark brick red with silvery crystals
- 4 brush coats over cone 04 bisque
- Runs, so leave a gap above the foot
- ACMI CL, ages 13 and up, conforms to ASTM D-4236
- Not for spray application
- Rated food safe, not recommended for food surfaces
