Miyama’s manufacturing reference describes casting as a way of shaping liquid porcelain clay in a plaster mould. The mould’s role comes before the later firing that makes the vessel into finished ceramic ware.
Technique and structure
The porous plaster absorbs water from the clay slip so that a form develops. Miyama identifies pressure casting for plates, bowls and cups, including divided or angular shapes. It separately identifies drain casting for forms such as pots and vases whose mouths are narrower than their bodies. These are distinctions in forming method and geometry, rather than two names for the kiln firing.
A forming description is not a care label
The maker also describes bisque firing, decoration, glazing and final firing as separate operations. Knowing how a shape was formed does not by itself verify its final glaze, decorative treatment or permitted household use.
For international readers
Check the exact product’s instructions for heating and dishwashing. This guide explains a manufacturing distinction; it does not assign one production route to every item in Miyama’s range.
Global shipping and buying
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日本語
磁器の鋳込成形：石膏型と焼成を分けて考える
深山は、石膏型が泥状の白磁土から水分を吸収して形を作る鋳込みを説明します。圧力鋳込は皿や鉢、カップなど、排泥鋳込は口の細いポットや花瓶などに用います。成形と焼成は別の段階で、一般的な工程説明だけから特定の器の食洗機や加熱適合を判断しません。