Duncan Underglazes are for painting a ceramic piece with many colors.
Duncan underglazes come in three types:
Concepts Underglaze for bisque by Duncan
The first coat is translucent. The second is semi-opaque. The third is opaque. Normal use is to apply 1-3 coats on bisque, let dry and cover with two coats of your favorite clear glaze.
Use them as Majolica paints on top of unfired non-moving opaque white or light colored glaze. No need to clear glaze as Concepts are shiny when fired. Try using them on tile, at cone 6 (on appropriate clay), in a spray bottle, these paints are versatile.
Sun plate by Jerry Frutchey.
For solid color, 3-coat coverage on greenware.
If you love layers, coat your pieces with Duncan's Cover-Coat® Opaque Underglazes! Applied directly to greenware, soft-fired bisque or bisque, these underglazes provide solid coverage over even the darkest colors, and are perfect for airbrushing and brushwork. Cover-Coats® fire to an opaque, porous matte finish and are safe for food when a Duncan food-safe clear glaze is applied over them.
EZ Strokes have become popular for their versatility. Their translucent quality makes them suitable for use with a number of decorating techniques including airbrushing, antiquing and brushstrokes. One stroke is all you need for most design work. One or two additional strokes may be added for depth and shading while the color is still wet. if additional coats are applied after the color has dried, the heavy build up may cause popping off, bleeding and bubbling.
30 EZ Stroke colors can be applied directly to bisque, check the label for details. EZ Strokes may be applied over most and underglazes, including Cover- Coats and other EZ Stroke colors, allowing the base color to show through. They may also be used to change clay slip, most glazes, fired snow and other EZ Stroke colors.