Mayco Stoneware Brush-On: Micro Cerulean 473ml

Mayco Stoneware Brush-On: Micro Cerulean 473ml

What are Mayco Micro Glazes?

"Micro" is short for "microcrystalline" which is a glaze that develops small crystallization from the the zinc and silica during the cooling process. Micros do not actually contain a glass crystal like our other stoneware crystal glazes. Rather, the effect is created by the glaze itself during the firing process. These glazes can be fired from cones 5-10, but the crystallization may not form at higher temperatures. The micros are not dinnerware safe due to surface durability, with the exception of the Micro Pearl. We recommend using micros on the outside of dinnerware, below the lip line or on decorative wares.

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Cone 6 oxidation (larger image): Micro Cerulean is a glossy, translucent, medium blue glaze with an aqua float that breaks over texture. Blooms of shimmering blue micro-crystallization will develop during the firing process.  

Cone 10 reduction (smaller image): Glaze turns to a variegated grey/blue. 

TIP: This glaze is stable at 3 coats. Additional coats or increased application thickness may result in movement. Due to the translucent nature of this product, be aware of your application consistency and thickness to avoid streaky brushstrokes. We recommend firing our micro glazes to cone 6 oxidation to reach crystalline development. Micro Cerulean achieves a stable, semi-opaque, deep blue result that breaks over texture and has a pearlescent satin finish when fired to cone 5. Can be used in oxidation or reduction firings. Results may vary. The choice of clay body, thickness of application, firing process, and temperature will greatly affect the fired results. Always test your application on your clay body in your kiln environment.

Food Safe | NOT Dinnerware safe 

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Stoneware Classic & Matte Glazes

Mayco Stoneware Classic glazes are a mixture of AP Non-Toxic and CL (Health Caution) label. Please review the individual color label for health classification and any appropriate warnings. All but one (see below) of the Stoneware glazes in the Classic line are Food Safe, according to FDA standards. Note: Finishedware producers may be required to have their ware food safe tested prior to introducing into commerce. With the exception of those noted below, The Stoneware Classic and Matte glazes are also Dinnerware Safe when used according to manufacturer’s directions and fired to the clay body’s vitrification temperatures. SW-132 Mirror Black, SW-182 Antique Brass, SW-164 Satin Patina, SW-185 Rainforest, SW-186 Azurite, SW-187 Himalayan Salt, SW-188 Landslide, SW-195 Riptide, and SW-197 Fossil Rock are not Dinnerware Safe due to the durability of the fired glaze. Some glazes, regardless of surface texture or porosity of underlying clay body, will be designated as not suitable for dinnerware as the fired glaze surface is not durable and can be impacted by contact with food or liquids. While it may not be harmful, it is certainly not desirable. SW-132 Mirror Black, SW-182 Antique Brass, SW-164 Satin Patina, SW-185 Rainforest, SW-186 Azurite, SW-187 Himalayan Salt, SW-188 Landslide, SW-195 Riptide, and SW-197 Fossil Rock are recommended for ornamental use only.

Stoneware Crystal Glazes

Mayco Stoneware Crystal glazes are a mixture of AP Non-Toxic and CL (Health Caution) label. Please review the label for the individual color’s health classification and any appropriate warnings. All of the glazes in the Crystal line are Food Safe, according to FDA standards. Note: Finishedware producers may be required to have their ware food safe tested prior to introducing into commerce. The Stoneware Crystal glazes are also Dinnerware Safe when used according to manufacturer’s directions and fired to the clay body’s vitrification temperatures. However, discretion and judgment should be used if the glaze surface is heavily textured, less from a safety and more from an aesthetic perspective.

Stoneware Gloss Glazes

Mayco Stoneware Gloss glazes are AP Non-Toxic, Food Safe, and Dinnerware Safe, when used according to manufacturer’s directions. Note: Finishedware producers may be required to have their ware food safe tested prior to introducing into commerce.