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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.
Once conditioned, the clay will remain pliable until the particles eventually re-adhere. [8] Oven-hardenable PVC plastisol, "liquid polymer clay," is a complement to polymer clay that can be used as an adhesive to combine pieces, or to create various effects. Pigments, chalk pastel, and regular polymer clay can be added to make colored liquid clay.
Also in Africa, Kiffa beads are made in Mauritania, historically by women, using powdered glass that the bead maker usually grinds from commercially available glass seed beads and recycled glass. Molded ground glass, if painted into the mold, is called pate de verre, and the technique can be used to make beads, though pendants and cabochons are ...
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.
The binding property of clay is also used widely to prepare shaped articles (e.g. pots and vases) or to bind solid pieces (e.g. bricks). In composite materials, epoxy, polyester or phenolic resins are common. In reinforced carbon–carbon, plastic or pitch resin is used as a source of carbon released through pyrolysis.
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