AMACO Cosmos (CO) Brush-On Glazes Cone 5/6

Crystalline Effects with AMACO Cosmos Glazes

AMACO Cosmos brush-on glazes create fluid, crystalline surfaces with depth, movement and variation inspired by cosmic and otherworldly effects. Their iridescent crystals make the fired surface a feature of the piece, with different colours and patterns developing across the glaze.

Designed for cone 5-6 firing, Cosmos glazes can produce microcrystalline effects using a normal medium-speed firing, without the need for a special cooling schedule. For increased crystal growth, you can use a controlled cooling schedule to develop the effect further.

Applying and Firing Cosmos Glazes

Cosmos glazes are fluid and can move during firing, contributing to their varied crystalline surfaces. Take care with application around the foot of your piece and refer to the individual product guidance before firing, particularly when working with more fluid colours.

The range is food safe, but AMACO does not recommend Cosmos glazes for food-contact surfaces due to their durability. This makes them better suited to decorative surfaces and pieces where their crystalline effects can take centre stage.

AMACO uses synthetic bone ash, and its clay and glaze products are vegan.

Why Choose Potclays?

We offer specialist glazes for potters who want the fired surface to become a feature of their work. Alongside our range, you’ll find tools and materials for developing decorative ceramics, with advice from a team that understands pottery.

Interested in how cooling can influence crystal development? Contact us for help understanding the firing guidance and choosing a finish for your piece.

Statement From AMACO Regarding Glaze Colour

Clay, glaze, and underglaze ingredients may experience colour, particle size, and other changes over time. This occurs due to natural variations in the mines from which raw materials come. Changes in manufacturing processes and suppliers can also be a factor.