Antique Chinese and Japanese Porcelain collector's help and info page

GLOSSARY

Slip casting

The process of making pottery by pouring liquid clay (slip) into absorbing plaster moulds. The slip is left in the mold for a few minutes while until a layer of slip has solidified against the mould interior wall. The excess still liquid clay is then poured out and left to dry. Finally the hardened item is removed from the mould, trimmed neatly and allowed to air-dry. This easily produces porcelain pieces with a thin body. If visibly at all, the parting mark left by the mould on these wares are vertical, while all antique porcelain vessels was molded in horizontal sections if at all.

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