Feldspar

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What is a glaze?

Feldspar

Typically when formulating a glaze we'll start with a feldspar, add a flux to lower the melting point, add clay to help keep the raw glaze in suspension and to help make the glaze adhere to the bisqueware, and add flint to keep the glaze from crazing (crackling). Colorants and opacifiers are added after the base glaze has been tested. Creating new glazes takes long hours of mixing small batches and firing them on test tiles. The choice of ingredients and proportions can be guided by calculations or by using rules of thumb and trial and error. Usually it's a little bit of both.

   

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