Pottery decoration under the glazeMcLaughlin, M. Louise (Mary Louise)
Science
Pottery decoration under the glaze
McLaughlin, M. Louise (Mary Louise)
Glazing (Ceramics); Pottery
Some work of a similar character has recently been done in this city,
however, in which the ware has been fired and glazed in such a manner
as to make it perfectly durable, and, at the same time, great beauty
of coloring has been retained. This result is not only important from
the fact that it offers opportunity for the production of ornamental
wares, but, also, from the consideration that the perfection of the
firing and glazing of the ware renders it valuable for articles of
use. Nothing could be prettier than sets of tableware made of this
cream-tinted clay, decorated in colored, conventional designs. This
would, we think, be the perfection of ware for ordinary use, and
would form, with the combination of the delicately tinted body and
the harmonious colors of the underglaze decoration, a service both
pleasing to the eye and very durable.
It is not the province of a work on under-glaze painting to
enter into the subject of over-glaze decoration, yet as they are
frequently combined, mention may be made of some of the varieties
of decoration in which the two processes are used. The most common
form of the union of the two methods is that in which gilding is
used as an adjunct to under-glaze decoration. Gold is always applied
over the glaze, as it would be utterly destroyed by the action of
the heat necessary in the firing of any hard glaze. That prepared
by decorators by dissolving gold in aqua regia may be used, or the
“bright” gold, which is obtained in a liquid state. The former is
the most durable, and when fired can be burnished or left with a
dead finish, which in many cases has the most pleasing effect. The
“bright” gold, as its name indicates, becomes bright in the firing
and the burnishing is thus rendered unnecessary. On a “smear” glaze
the “bright” gold produces a beautiful dead gold effect, owing to the
dead surface of the ware to which it is applied. In Japanese wares,
dark blue, under-glaze, often appears in conjunction with gold, and
also with red, green, or other colors which have been put on over the
glaze.
One beautiful result of the combination of over and under-glaze
painting is seen in the ware painted by Lemonnier. In this the ground
is generally painted under the glaze in a manner similar to that
described in this chapter for the production of Lambeth faience.
The design is then painted with over-glaze “relief” colors, and the
high lights laid in heavily, the whole producing an effect which
combines the delicacy of the over-glaze colors with the depth of the
under-glaze.
Public-domain text, read in full here on John Shaqi.
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