Digitalfire Ceramic Glossary

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Liner Glaze


It is common to glaze food surfaces of utilitarian ware with a white or transparent glaze called a 'liner glaze'. This is done to avoid exposing in-glaze or on-glaze metallic colorants to food or drink (which could leach them away). Liner glazes can be applied in such a way that they meet the outer glaze at time rim. This is done by glazing the inside and lip first, then the outside using the colored glaze. More specifically, pour the glaze into the piece and then pour it out while turning it. Immediately press the rim into the liner glaze a few millimeters. Wax resist the glaze covered rim and down inside about a couple of centimeters. Cut away the glaze on the outer edge using a sharp knife at a 45 degree angle (thus leaving the inner liner glaze coming to the peak of the rim with a wax overlay). Finally, press rim into the colored glaze about 1 cm then quickly turn the piece over and press it down into the glaze up to the rim (taking care not to go over it). Then sponge off the glaze drips).


Pictures
An example of how a liner glaze can meet another glaze at the rim of a piece. This it quite simple to achieve.


An example of three cone 10R mugs that have a liner glaze.


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