Potash Feldspar, 1kg

£3.12 (inc VAT)

Used as a flux to help materials in clay bodies and medium-high temperature glazes melt and fuse during firing.

Availability: In stock SKU: 5F5ML Categories: ,

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Description

K2O 11.3%, Na2O 3.2%, Al2O3 18.5%, SiO2 65.8% typical.

Used as a flux and fusible in clay bodies and medium-high temperature glazes.

For glazes - if a recipe lists feldspar or felspar it probably means Potash Feldspar.

Glazes with 35%+ feldspar are likely to produce crazing problems, more than 50% will be unbalanced and probably lack adequate glassy formers in the glaze.

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