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Each
stage of the production in miniature ceramics is a delicate job and a potential
disaster. Karen takes us through the hazardous stages of a successful Stokesay
Ware heirloom:
HOW IT IS
MADE We make Stokesay Ware using the same
materials, techniques and firing temperatures as the equivalent full size
pieces and use bone china for our fine china.
There is a lot of confusion surrounding the difference between
bone china an porcelain. As most people know, porcelain originated in the far
east and was highly valued. The potters of the late eighteenth and early
nineteenth centuries were immensely creative, both artistically and
technically, and tremendous strides forward were made during this period.
Bone china is generally attributed to Spode,
who invented it in the 1790's. It was so universally admired that it became the
industry standard by 1800. It is a much whiter body than porcelain and although
it lacks porcelain's plasticity, making it harder to handle in its unfired
state it has another technical advantage. Both clays are high fired, and warp
like mad at their top temperature.
 Karen's
kitchen unit is used to good advantage. The white sink and flooring are by
Sussex Crafts and the plate rack and tray by Jane Newman.
However, unlike porcelain, bone china has a high biscuit firing
followed by a low glaze firing which means that the warping losses occur after
the first firing before the expense of glazing and refiring. The confusion is
compounded by the fact that bone china is sometimes referred to as English
porcelain and the term English china encompasses both materials.
I start by making scale drawings from which I
make the original model. Depending on the shape of the piece this is either
turned on the lathe, hand modelled or a combination of the two, in high density
plaster.
I use a Harrison Union Graduate
lathe for most of my turning. It weighs about 4 cwt, but its weight gives
enormous stability to precision work.
From
the original model, a mould is made in plaster which may consist of one to four
or five pieced depending on the complexity of the shape. Plaster is completely
inflexible to undercuts have to be accommodated by splitting the mould.
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 You can see some of the stages in the process of making a gravy boat.
At the back is the four-piece mould, while in the front is the original solid
plaster model, the gravy boat cast and glazed, and the final piece fully
decorated in a Georgian Key design. |