Earthenware glaze without lead. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Earthenware glaze without lead. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Here are the recipes faience glaze without lead.

In practice, the following recipe is recommended.

Potassium oxides 3,3 wt. h;
Sodium oxides 2,2 wt. hours;
Calcium oxides 7,4 wt. hours;
Alumina 11,5 wt. hours;
Silicic acid 61,3 wt. hours;
Boric acid 14,3 wt. h.

This glaze is melted evenly in the kiln on such products, the shards of which indicate a slight porosity.

For frits the following composition is recommended.

Potassium oxides 3,4 wt. hours;
Sodium oxides 2,2 wt. hours;
Calcium oxides 10,5 wt. hours;
Alumina 4,7 wt. hours;
Silicic acid 20,3 wt. h.

The molecular weight of the frit is 348,

The glaze is made up of 0,9 equivalents of frit, feldspar equivalents and 0,25 equivalents of lubricated sand-containing kaolin.

Author: Korolev V.A.

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