• Picture of CC154 COBALT NAVY BLUE                             2 OZ
Cover-Coat Opaque UnderglazesViews : 3156


Product Features
Kiln Required Yes
Cone Firing Range 04 to 6
Finish Matte, porous
Coverage Opaque - 3 coats
Food Safe Yes, when a nontoxic, food-safe clear glaze is applied
Nontoxic Yes
Available Sizes 2 oz., assorted pint and gallon
Item # : 98660    SIZE : 2 OZ
  1. Apply 3 coats to greenware, soft-fired bisque or cone 04 bisque.
  2. Fire to shelf cone 04 to permanently adhere Cover-Coats to ware.
  3. Apply glaze of choice if desired and fire to shelf cone 06.
  4. Clean up with water.

Brushing Application - Apply first scrub coat of 50% Cover-Coat and 50% water, then apply two or three smooth coats of undiluted color. Brush each coat in the same direction whenever the piece permits. Allow to dry between coats.

Sponging Application - Dip a slightly dampened sponge into the color and sponge on three textured even coats, using an up-and-down pouncing motion. One coat of another color can be sponged here and there over the first to give a multicolored effect.

Airbrushing - Thin the color with Thin ‘n Shade, using one part Thin ‘n Shade to two parts color. Airbrush the thinned color onto the greenware, passing over the desired area(s) until the intensity of the color on the ware is the equivalent of the color in the jar, then airbrush the same areas a second time.  (Cover-Coat is generally applied to greenware.)

Sgraffito - Apply the color by brushing or sponging, then sketch on the design. While the color is still damp, use a TL411 Stylus to gently scratch fine shallow lines along the design lines, then go over the lines a few more times to gradually deepen and widen the lines. Use a soft bristle brush to remove dust and clay particles from the sgraffitoed lines. Bisque fire the ware to witness cone 04 and apply the desired glaze.  This technique is easier when completed on greenware.

Thickened Cover-Coat - A few drops of vinegar added to Cover-Coat will thicken it so that it can be used to create raised designs. Apply the thickened color with a brush or sponge. (Note:  This does not always work for all Cover-Coats, so always test before planning a project.)

Polished Finish - This nonglazed finish is used on nonutility items. Apply the color as directed under brushing or sponging application, then apply another coat of color thinned half and half with water to a small area of the ware at a time. When the wet look disappears from the newly painted area, polish it briskly with a soft cloth until a sheen is obtained. Overlap the areas slightly so that no unpolished spots will remain. When the entire surface of the ware is polished, bisque fire it to cone 04. No additional finish is required. (This finish is water resistant, but not waterproof.) Polished Cover-Coat is excellent as a background for spot glazing.

On Porcelain and Stoneware - When thinned with water or Thin ‘n Shade to a thin-milk consistency, many Cover-Coat colors can be applied to dampened porcelain and stoneware bisque, and fired to the maturing cone recommended by the high-fire slip manufacturer, cones 4-6. Some Cover-Coats will undergo a color change. Test-firing is recommended. The surface finish will also change. Some Cover-Coat colors become highly glossy, some attain a slight sheen, and some fire to a completely matte finish. All the Cover-Coats bond firmly to the ware and create some very beautiful effects. Click here to view our Mid-Range Performance Index. 

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