Pottery decoration under the glazeMcLaughlin, M. Louise (Mary Louise)
Science
Pottery decoration under the glaze
McLaughlin, M. Louise (Mary Louise)
Glazing (Ceramics); Pottery
The design having been drawn upon the surface with a lead pencil,
the ground, if it is to be colored, may be laid on with some color,
or mixture of colors, which will harmonize with the decoration. As
it is impossible to paint it smoothly with a brush, or to do it by
any of the methods in use for over-glaze painting, the ground must
be “dabbled” on, either with a small blending brush, or better, a
sponge, which has been cut to the proper shape and size, and which
may be fastened in a quill and used as a brush. This is dipped in the
color which has been mixed upon the palette, and with it the color
is applied to the surface of the vase, producing a mottled ground,
which may be shaded from light to dark, by the application of more
or less color, as desired, and also may be varied by the introduction
of other colors which will harmonize with each other, and with the
decoration. The design may then be painted in flat washes, which
should be laid on freely, with the shadows boldly defined. This done,
a line, either of black or dark olive green, made from dark brown
and a little green, may be painted around the design, outlining and
relieving it against the ground.
The painting finished, the piece should then be fired to fix the
colors. If necessary, it can be touched up in any places which are
thought to need deeper tints after this firing, and before the final
process of glazing. It must be remembered, however, that the effect
of the glazing will be to deepen the colors, and, unless the result
of this process has been learned from experience, the tendency will
rather be to get them too dark than too light. The most important
thing is, to keep the relative value of the lights and shadows. If
this is done, the effect will not be bad, even if the colors should
fade a little in firing.
Another very important item in under-glaze painting, which has been
mentioned before, is, that the colors must be in proper condition for
use, and to that end, must be carefully rubbed down with a muller or
palette knife. Inattention to this detail has caused much work of
rude and rough appearance to be produced, which might otherwise have
been fairly good.
In the Lambeth and Bennett ware the charming effect of color will
generally be found to have been produced by a system of burning which
would scarcely be considered legitimate, according to the strict
rules of the potter’s art. The ware is not fired in the biscuit as
hard as such ware is usually fired, and the glaze applied is softer
than the body of the ware demands. This soft glaze is used to save
the colors, and not being suited to the body of the ware will,
generally, be found to be badly crazed. In this case, however, lovers
of beautiful and harmonious colors, in the decoration of pottery,
will think that the ends justifies the means, and as the articles
are wholly adapted for ornamental purposes, this defect of glaze
detracts but little from their value.
Public-domain text, read in full here on John Shaqi.
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