A glaze or body additive designed to strengthen it during the dry stage or to make it more durable to withstand handling during processing. Binders enable using cleaner but less plastic materials. The mechanism of a binder can be as simple as a glue that hardens and bonds particles together. Other binders, especially inorganics, have more complex mechanisms. Body binders can also make it possible to form powders that would not otherwise be plastic enough to hold a shape. Likewise, glaze binders make it possible to use slurries with very low clay contents yet still have a hard enough surface to withstand handling. Binders come at a cost, they slow down drying and often pose issues related to their decompositions during firing. In some industries, like tile, they are either not used or only selected ones are practical (e.g. sodium silicate).
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