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Kneading
and preparing the clay (homogeneity) and pushing out
air-pockets |
Japanese
shell or spiral kneading |
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Western kneading. "oxhead" |
Centering and forming the base. |
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Forming the inner dome |
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Flattening the base and pulling
up the outer wall |
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Closing the exterior dome. |
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Flattening the
base and finishing the form with a metal kidney |
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After drying leatherhard
stage, the pot is polished. |
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The
form is cut off the wooden bat with a metal thread; the base
now becoming the upper part can be finished. |
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Application of terra sigillata
on the dry body spraying, immersing, pouring or painting. |
Before firing
the pot is polished with plastic sheet. |
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After the biscuit firing, the pieces are fired in reduction
in a metal container (muffle) in a gas kiln. The two firings
can be done in one firing, using a wood firing kiln in heavy
reduction. |
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The
temperature depends on the type of terra sigillata, from
950℃ to 1200 ℃ |
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Rolling the clay |
Impression
with a rubber stamp |
In the pot structure
intersections are cut. |
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Some supplementary techniques to obtain different surfaces:
thermal etching |
Etching
with vinegar |
Drilling |
