CLAY MODELLING
Modelling in clay is one of the most ancient and fundamental techniques
of sculpture. Clay can be used as a material in its own right, in the
form of fired sculptures, or used to make sculptures that are subsequently
cast in metals, such as bronze. There are many different types of clay
and each is suitable for particular used.
Clay can be fine grained and
smooth, coarse and heavily grogged, and either white, grey, buff or
red-brown in colour according to the amount of iron it contains. White
clays contain little or no iron, while red clays have a high iron content.
Smooth clays show fine detail when modelled but tend to be soft and
floopy, while grogged clays will support themselves and are best suited
for making large sculptures.
In addition to modelling a solid lump of clay, coils, slabs and pinch pots are extremely useful basic forming methods that can be used to build up clay sculptures.
(Karin Hessenberg; Sculpting Basic)