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Slipcasting: The paths to making a ceramic object are many: wheel throwing, hand building, coil building, press molding and last but certainly not least slipcasting. Although we may not think about it, slipcasting is the most widespread use of a ceramic technique, due to industrial manufacture, which tends to use this technique, which is most suitable to the manufacturing of multiples.
Once you have made a mold (see Making a Simple Plaster Mold), you can make hundreds of casts of the same object with relative ease. Molds do deteriorate with use however, and start to degenerate after a couple of hundred uses (more or less, depending on quality).