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Ceramic mold casting, also known ambiguously as ceramic molding, [1] is a group of metal casting processes that use ceramics as the mold material. It is a combination of plaster mold casting and investment casting. [2] [3] There are two types of ceramic mold casting: the Shaw process and the Unicast process. [4]
The molds and equipment were sold to the US Glass Company, where their Duncan Division in Tiffin, Ohio continued to produce Duncan-ware pieces. [1] [3] A number of Duncan employees also joined US Glass Company in Tiffin. [3] The Duncan factory was sold to Andy Bros., but before they could move in, a fire destroyed the building on June 29, 1956. [1]
Ceramic molding is a versatile and precise manufacturing process that transforms clay or porcelain into intricate shapes. Employing techniques like slip casting or press molding, artisans create precise replicas of original models. After molding, the ceramics are fired at high temperatures, ensuring durability and aesthetic appeal.
Slip casting, or slipcasting, is a ceramic forming technique, and is widely used in industry and by craft potters to make ceramic forms. This technique is typically used to form complicated shapes like figurative ceramics that would be difficult to be reproduced by hand or other forming techniques. [ 1 ]
Ceramic forming techniques are ways of forming ceramics, which are used to make everything from tableware such as teapots to engineering ceramics such as computer parts. Pottery techniques include the potter's wheel , slip casting and many others.
When humidity is high molds can begin to form on ceramic, particularly ones in which there is no glaze. Mold spores are found throughout the atmosphere and will attach to suitable substrates, including ceramics. Earthenware ceramics are frequently affected due to their porosity and lack of glaze. [4]: p.25