Involves using slip. It
can also take various
forms, such as
high-pressure casting or
traditional slip-casting.
Coiling
A simper and traditional
hand-worked method of
making large containers,
using coils of clay would
around to gradually build up
the shape.
Extrusion
The process is
based around
a plastic clay
mixture being
forced through
a die.
This is and ideal
process for
products and
components of
the same
cress-sectional
shape.
Typical extruded
products include
bricks, pipes and
electrical conduits.
Jiggering
Making flatware out of wet clay. A pancake of clay is
placed over a revolving mould to form the inside shape,
later a metal profile cuts the remaining. Used for small
production items. Process replaced by powder-pressing
which is faster and automated.
Firing
All ceramic
products need
to be fired or
sintered in order
to be useable.
The conditions and
firing temperature
required depend on
the material.
Some pieces need several firings,
beginning whit a biscuit-firing and
ending whit a firing for the glaze.
Slip-casting
Based on a slip creamy
suspension of clay in water.
Then poured into plaster moulds
for drying. The longer it is left
the thicker the skin. The
remaining slip is poured away.
Ideal for large and intricate
shapes.
Pressing
Automated process using wet clay or
dry granules. The ceramic powder or
clay lays in a cavity by 2 steel moulds
under high pressure. Excellent
precision, such as electronic industry.
Matching
Certaing ceramics can be
machinable. Such as
milling, sawing, grinding.
Precision highly reachable.
Hand-painting
Applies glazes on mass-produced giftware. When
coat applied it needs a second fire to finalize the
process.
Jollying
Makes hollow-ware by using a
metal profile that form the
inside piece.
Injection
moulding
Used to form polymer-based
products, less used in ceramic
industry. Ceramic is mixed
with a polymer resin for better
plasticity to flow into the
mould. Then the resin is
burned during the firing.
Acid etching
The model is created in a
transfer and soaked. Once the
transfer is applied to the tile,
which is immersed in acid, the
area covered is not attacked
by the acid to produce the
sallow bleeding.
Ram-pressing
Sanitary and table-ware making
process which uses 2 porous moulds
to squash a ceramic body. Used to
make thick-sectioned pieces.
High pressure
casting
Variation of slip-casting
process, where the slip is
form under pressure in
the plaster mould.
Drying
The presence of
excessive
moisture during
firing results in a
damaged final
piece once a
ceramic product
has been made
using a wet
material, it can be
fired.
The process must be slow as
rapid water evaporation will
cause cracking and uneven
movement, which leads to
warping.