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Additionally, the type of ceramic will affect how it will break down. Unfired clay, like mud and clay adobe, is clay that is fired under 1000°C or 1832°F. [contradictory] This type of clay is water-soluble and unstable. Earthenware is clay that has been fired between 1000–1200°C or 1832°–2192°F.
Polymer clay is a type of hardenable modeling clay based on the polymer polyvinyl chloride (PVC). It typically contains no clay minerals, but like mineral clay a liquid is added to dry particles until it achieves gel-like working properties. Similarly, the part is put into an oven to harden, hence its colloquial designation as clay. [1]
Plastic beads became popular in the 1960s, [6] and were not always a part of Mardi Gras; they were introduced only in the late 1970s. [7] The ritual of throwing Mardi Gras beads dates back to the nineteenth century, particularly the 1970s, in New Orleans. Beads used to be manufactured of glass, and many of them were imported from Czechoslovakia ...
FIMO was first a plastic modeling compound brought to the attention of German dollmaker Käthe Kruse in 1939 as a possible replacement for plastic compounds. It was not suitable for her doll factory use, and she turned it over to her daughter Sophie Rehbinder-Kruse, [3] who was known in the family as "Fifi" (hence FIMO, from Fifi's Modeling Compound).
A ceramic material formed by the high temperature firing of a refractory clay, after which it is crushed (and sometimes then milled) before being graded to size. Used as the a non-plastic component of some clay bodies. Grog is a similar material. [4] Chemical porcelain
A ceramic flux functions by promoting partial or complete liquefaction. [1] [2] The most commonly used fluxing oxides in a ceramic glaze contain lead, sodium, potassium, lithium, calcium, magnesium, barium, zinc, strontium, and manganese. These are introduced to the raw glaze as compounds, for example lead as lead oxide.
Grog, temper for clay. Grog, also known as firesand and chamotte, is a raw material usually made from crushed and ground potsherds, reintroduced into crude clay to temper it before making ceramic ware. It has a high percentage of silica and alumina. It is normally available as a powder or chippings, and is an important ingredient in Coade stone.
Krobo bead (fused glass fragments) Krobo powder glass beads are made in vertical molds fashioned out of a special, locally dug clay.Most molds have a number of depressions, designed to hold one bead each, and each of these depressions, in turn, has a small central depression to hold the stem of a cassava leaf.
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