Application

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Why am I having trouble with red glazes?

Application

During the formulation of red glazes, there are certain minerals hard for manufacturers to eliminate. One of these is manganese which produces a black speck in the finished piece.
Black specks in red glazes can also be caused by dirty bisque so be sure to inspect pieces before applying reds.
To get the best results with reds, you should apply glazes of the same family on bisque.
Red glazes should not be thinned when applying three coats of even coverage. Some teachers even recommend four to five coats.
Most of the problems with red glazes occur during the firing process.
The recommended bisque you should use for red glazes is that which has been fired to cone 04 or 05.
You should not fire raw clay bodies with reds.

   

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