Dehua porcelain clay
minerals are characterised by low aluminium and high silicon composition and the semi-finished Dehua blue and white porcelains adopt feldspar, quartz and other materials; while the export blue and white porcelains of Jingdezhen Kiln mainly adopted kaolin soil with high-aluminium and low-silicon plus an appropriate amount of chinastone.
The porcelain clay
is pugged multiple times before being carefully wrapped and allowed to 'sweat' for a month before being repugged prior to use.
Conversely, porcelain clay
body formulas can become softer in their plastic bags.
Through altering the amount of water mixed with porcelain clay
powder, Eberle controls the structural capabilities of his material: "The clay arrives in powder form.
The porcelain clay
that I touched for the first time in my life bore no resemblance to those I had experimented with till then, not to mention the fact that having worked with porcelain clay
for only three years, my experience and knowledge were limited."
The melting soluble material will then trap carbon resulting in spotted random grey or black glaze surfaces notably on a white porcelain clay
The steps are as follows: to flatten the pillow pieces on the gauze beneath, to cut it symmetrically, to press each part forcibly into models, to enforce the interface inside with porcelain earth, to make the body part model, to carve and to attach additional patterns to the main body for the purpose of partial decoration, to save an elliptic hollow at the pillow lid interface for later reinforcement and moulding inside, to connect the pillow body and pillow surface when the moisture is appropriate, to dig a hole at one side for ventilation during the burning process, at last to add more porcelain clay
to strengthen and mould.
Patiently coiling thin, long strands of porcelain clay
, Thomas piles coils upon coils, constructing large, basket-like vessels, deep bowls and tall columns whose ridges retain her fingerprints as a narrative of the process.
In an attempt to duplicate the white almost translucent porcelain clay
body, the earthenware clay body of Maiolica ware was covered by a white slip and then decorated with colouring oxides.
In describing this item in detail, I do not want to sideline the three larger and more dominating objects: the animal-headed figures, low-fired in white porcelain clay
, minimally decorated with painted and dribbled slip and glaze.
Flameware clay body and glaze formulation will require that the reader either has or obtains (through study and experimentation preferably) a good understanding of the materials that make up a typical stoneware and porcelain clay
body and glaze and has had experience in the preparation of clay bodies and glazes.
Some draw the viewer in with their brightly covered surfaces while others display the bright white porcelain clay
body that Lighton favours.