What does rutile do to a glaze?
Rutile produces many crystalline, speckling, streaking, and mottling effects in glazes during cooling in the kiln and has been used in all types of colored glazes to enhance the surface character. It is thus highly prized by potters, many attractive variegated glazes are made using it.
What is light rutile?
Light Rutile is the same material as dark rutile but it is the calcined version. The calcining process burns out materials that can cause various problems in glazes. Tuft of brown needles of rutile protruding from a quartz crystal, from Brazil.
Can you mix glaze colors?
You can mix different types of glaze by layering or blending. Some glazes are not compatible. This can cause blistering, crawling, and flaking. The mixed glaze may also be less stable and prone to leaching.
What does rutile make?
What makes pink glaze?
In the presence of tin oxide in calcium glazes, chromium turns pink. Only a very small amount of chromium is needed for this (0.1–0.5% with 5% tin). The magnesium and aluminium can be replaced by cobalt, zinc, iron, or chromium to make colored spinels—cobalt zinc alumina chromite is a blue-green spinel.
What are the different colors of rutile glaze?
Rutile is that unbelievably beautiful glaze additive that produces colors ranging from light and dark blue, to tan, gold, yellow, and even purple. It also produces a range of crystal formations. It seems to behave however it chooses, depending on the glaze base and the firing conditions.
How to make blue glaze with green crystals?
Blue Glaze with Green Crystals ^6 ox. Blue Glaze with Green Crystals ^6 ox. Recipe Name: Orange glaze with blue crystals Cone: Color: Firing: Surface: Amount Ingredient 5 Kaolin–EPK 15 Silica 24 Zinc Oxide 13 Whiting 7 Lithium Carbonate 36 Feldspar–C6 100 Total Additives 1 Copper Carb.
What are the different colors of ceramic glaze?
Linda Bloomfield explains the chemistry behind cool ceramic glaze colors ranging from the palest yellow-greens to some terrific teals in this excerpt from her book Colour in Glazes. Plus she shares loads of pottery glaze recipes (for all firing ranges).
What kind of glaze can I use to make teal green?
Cobalt and chrome combine to make teal blue-greens. In alkaline glazes, a bright chartreuse green may be obtained using a small amount (0.2%) of chromium oxide. Zinc should be avoided in chrome glazes, as it turns the chromium brown. Cobalt and titanium or rutile can produce a pale green in high-alumina glazes and slips.