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The Making of
Thai-Celadon
It
takes skill and time to produce this collectable yet functional art.
Thai-Celadon production is a relatively long and complicated process
carried out by skilled artisans
in Thailand. The most essential aspects of production are the use of the
authentic earthenware clay raw materials, proper drying methods, the use of
highly skilled
artisans trained from generation to generation in molding and design
application, and the glazing and firing processes. A small, comparatively
simplistic design,
either hand-painted or in low relief, usually takes four to six weeks to
make. A larger piece in a highly intricate design can take as long as ten
weeks. Thai-Celadon's
popularity continues as Thai-Celadon defies exporters demanding them to
compromise quality standards in favor of profits. Traditional methods are
the key to the
beauty and consistency of celadon. The methods take a lot of time, but that
cannot be changed without sacrificing the quality of its craftsmanship.
Following is
a brief guide to the Thai-Celadon
production process.
Step 1: Dried
earthenware clay in raw form is reduced to powder and then filtered through
a sieve to make sure all elements of the base
material are pure clay
in powder form.
Step 2: This powder clay is then passed through what is called a pug-mill
-- the pug-mill is a hand-driven machine which further crushes
and blends
the powder clay in
order to make it more malleable for structural formation, and in order to
make it more solid and
dense in its final form. The powder clay is mixed with
water prior to processing through the pug-mill.
Step 3: After having passed through the pug-mill, the now moist clay is
left to age for a short period of time in the open air, where the
aging
process takes place
through a natural interaction of common bacteria carried by air with the
moist clay.
Step 4: After proper aging, the clay is kneaded in order to remove air
bubbles that form during the aging process, and in order to improve
elasticity and plasticity.
Step 5: The clay is then ''Thrown-on-the-Wheel'', a term which means that
the clay is hand-molded with the help of a rotating cylinder
which forms the
interior of the
Thai-Celadon piece. The exterior surface,
the edges, and the base are all hand-formed.
Step 6: After each piece has been molded, it is set aside and allowed to
dry, again in the open air, until it gains the hardness and
comparative
consistency of
leather. In Thai-Celadon production this
is called ''Leather Hard''.
Step 7: When ''Leather-Hard'' the clay pieces are hand-engraved, incised,
carved or painted using often intricate designs and motifs. They
are then
left to dry
completely in the open air. When quite dry, they are checked for cracks or
defects.
Note:
Although at this point in the production process the pieces are hard and
dry, if immersed in water they will quickly revert to
the base clay with
no form or design.
Step 8: All pieces passing inspection are then ''Bisque Fired'' in a tub
kiln to a temperature of approximately 800 degrees Celsius. At this
point
the bisque-fired pieces
are stable in water but are still porous. A second check is made for cracks
or other defects.
Step 9: The bisque-fired pieces that pass inspection are dipped in a
special Thai-Celadon glaze. This glaze
is usually made of rice
stalk, bean stalk, or bamboo
mixed with the ash of various types of tropical wood. After dipping in the
glaze, the pieces are
allowed to dry.
Step 10: The final step is to fire the pieces, already glaze-dried, at the
ideal temperature range of 1,260 to 1,300 degrees Celsius in
carefully
controlled and
monitored ovens
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