He redraws the figure and the outer border by scratching through the wax and into the clay Following a pencil outline, he brushes on underglazes then applies wax to the entire surface. VisGirda slab builds his plate forms from a terra cotta body. I've been creating pieces from my travel sketches to permanently document places I've traveled to in a sketchbook-like The clay body is a red terra cotta that can handle a number of multiple firings if needed. The colored glaze (sometimes gloss, sometimes matt) melts through the whiteĪnd gives it a richer off-white look. I've recently used underglazes to create a watercolor effect by thinning them down and painting them onto a semi-white glaze that is layered over another colored glaze underneath. Wait for the first coat to dry completely before brushing on a second coat. Use a fan brush and float the first coat on without going over If you've applied underglazes on bisque, you'll find that they'll smear when brushing on a clear overglaze because moist glaze moistens the underglaze. That matches your clay body and firing range.Īpplying an overglaze can be tricky. If you're sealing the surface of work that will come in contact with food, be sure to use the appropriate food-safe clear You'll find the clear deepens the value of the colors regardless of application method. The overglazeĬan be anywhere from matt to glossy. I've had success with whites and very light-colored glazes, but darker glazes seem to muddy or absorb the color of the underglaze. Underglazes work best with a clear overglaze, although other glazes of varying opacity and color may also be used. Too thin for silk screening or monoprinting, leave the container exposed to air to evaporate some of the liquid. If an underglaze is too thick for spraying or using as a wash, just add water to thin it down. Each application method has different requirements. While most underglazes were originallyįormulated for use at low-fire temperatures, most, maintain their color in the mid range and some even as high as cone 9 or 10.Ĭan be applied by brushing, pouring, dipping, spraying, sponging-pretty much anything goes. When used to add color to surfaces, underglazes have an advantage in that they are composed mostly of clay with very little flux, so they'll stay put and won't run, which makes them ideal for detailed decoration. In addition to being able to change the surface color of your clay body, underglazes can also be used to change the texture of the body. And since they're formulated to have low drying shrinkage, they can be applied to bone-dry greenware
Underglazes are basically clay slips containing colorants, and they're a great way to add color to your work using a variety of application methods. It should provide plenty of inspiration if you have been thinking about exploring the world of underglazes! - Jennifer Poellot Harnetty, editor In today's post, David Gamble explains how a number of artists use underglazes in their work. The sky is the limit when it comes to the ways underglazes can be used.
Over the past several years, underglazes have become my absolute favorite decorating tool. Pottery Making Illustrated Submission Guidelines.Pottery Making Illustrated's Print Mailing Schedule.Ceramics Monthly's Print Mailing Schedule.
Workhouse Clay International ICAN Merit Award.ICAN Making a Difference in Ceramics Award.Annual National K-12 Ceramic Exhibition Award.
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