Underglaze Decorating Chalk Crayons -- LEAD FREE
Pastel Techniques. Ceramic decoration with unusual, effective style and a variety of textures can be created with AMACO Underglaze Decorating Chalk Crayons. The 2 3/4" x 7/16" chalk crayons are come in sixteen colors ranging from intense hues to pastel tones. On bisque pottery they are used like pastels.
Sketching on bisque with AMACO Underglaze Chalk Crayons results in pebbled appearances. Colors may be blended or smoothed by rubbing with the fingers or a swab of cotton on a toothpick.
Water color effects are obtained by brushing sketches with water. For fine lines, the chalk crayons can be sharpened. Small pieces of chalk crayon may be dissolved in water for painting or spraying.
Selecting a Covering Glaze. Clear Transparent AMACO Glazes LG-9, LG-10, and HF-9 are recommended. Sponge on first coat of clear glaze lightly in order not to smear design. Let dry and brush on additional coats of clear transparent AMACO glaze. This precaution is unnecessary if the glaze is to be applied by dipping or pouring.
Pieces are fired to the maturing temperature of the covering glaze. When spray application of a covering glaze is desired, first refer to individual listing to be sure that it may be sprayed safely.
NOTE: The maximum firing temperature is Cone 10 for the following: Black, Brown, Dark blue, Dark Green, White, Gray, and Medium Blue. The maximum firing temperature is Cone 5 for the following: Turquoise, Yellow, Dark Brown, Blue-Green, Light Brown, Medium Green, and Yellow-Green. The maximum firing temperature is Cone 05 for the following: Rose and Lilac.
AMACO Underglaze Crayons have only been tested and approved as dinnerware safe when applied and fired under LG-10 Clear Glaze. They should not be used on surfaces which come in contact with food or drink. If left unglazed, AMACO clear glazes LG-9, LG-10, and HF-9 or any other dinnerware safe glaze are recommended to be used over AMACO Underglaze Crayons to make them dinnerware safe.
Amaco Underglaze Chalk Crayons are available in two sets of eight assorted colors.