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Pottery in the broad
sense consists object
form plastic clay and
fired for durability.
It includes vessels,
sculpture, bricks, tiles,
low fired earthenware
or hard, high fired
stoneware of porcelain
– all covered
under the traditional
term ceramics. In the
strict sense pottery
refers only to vessels
of earthenware and terracotta.
Because
fired (backed) clay
is remarkably resistant
to weathering, clay
artifacts are among
the oldest reminders
we have of man’s
skills. Pottery of all
periods reflects religious
and aesthetic traditions
and reveals the course
of trade.
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Terracotta wares are most common containing
many impurities. They can be fired
only at low ranges of temperature
between 800oC – 1000oC; producing
soft bodies of cream, buff or red.
The impurities burn at the time of
firing leaving only the mineral based
materials which are not harmful to
human consumption.
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1.
Clay
As granite and other feldspathic rocks
decomposes in the weathering process,
they deposit externally small, shingle
like particles of alum in a and silica.
When combined with water these particles
cling together to form the plastic,
mould able substance, that is called
pure clay. Clay usually mixed with
impurities, is widespread on the earth’s
surface. They are many varieties;
depending on the kind and proportion
of impurities. Usually several varieties
are combined to form a clay body suitable
for working. To achieve a suitable
clay mix or body it need to be mixed
with opening materials like silt,
fine sand, grog, ash etc. all are
natural mineral based.
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2.
Processing
The clay lumps after sun drying is
put into pulverizer/Ball Mill. With
the addition of opening material and
sufficient water, it was ground to
the necessary fineness. Sieved through
a mesh of required fineness the clay
slip was allowed to settle and dried.
The clay after sufficiently dried
was put for aging and pugged. The
homogeneously made clay body is used
for fabrication of articles.
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3.
Articles formation
The readymade clay body is being used
for articles formation of different
methods such as
- Throwing
on potters wheels
- Mechanical
Jiggering
- Slip
castings
- Hand
made coiling and designing
- Mechanical
processing/molding
Skill
is being exercised at the time of
fabrication of product. Craft oriented
work requires morale skill and experience.
Product combined with mechanical methods
and craft orientation also exercised.
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4. Coating
The coating applied is the surface or
the articles are mineral based. The
colour making minerals has been specially
processed to give special appearance
of the articles. It never reacts as
human consumption is considered. It
will add look to the articles.
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5. Decoration/Designing
Designing of the articles has been
given by hand work by using handy
tools. It requires lot of attention
and expertise since each and every
prices are being attended individually.
All designs depends upon the creativeness
of the master person.
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6.
Fuel and firing
For firing (baking) the articles. Fuels
of different types are being used. Bio-man
of various types are fossils fuels are
also. For firing the articles improved
kilns are being used. Baking the articles
in these kilns will give product of
high quality with uniform texture.
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Copyright
@ Reserved by Kanalan Art |
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