Amaco Old World Crackle
Glazes
Crackle glazes are formulated to produce a network of
cracks on the fired ware similar to crazing, giving it an old or antique look.
These glazes can be used for all over coverage or they can be applied over an
underglaze design. Because of the transparency of the color glazes, the
underglaze design will show through, creating extraordinary effects of design
and color. Apply 3 crosshatched coats.
For best results, fire
between Cone 06 and Cone 05. Too hot a firing will prevent the
crackle. To emphasize the crackle
after firing, swab the fine lines with colored inks. Recommended for use
on decorative items only as it does not seal the surface of the ware as other
glazes do.
These glazes are
perfect for Raku because they can be underfired to Raku
temperature. Their crackle effect is enhanced when reduced and the
crackle is filled with carbon during the reduction process.
