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Monna

High Fire Glazes?

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Monna    0

Look I donot know so I m asking here. The kilns I have available to me fire at cone 10.I want to include some Celtic knot work ( black and white or many colours ).

 

 

 

I was toldthis can be possible putting the knot on the pot or bowl in a cone 4 black orsome colour and then after that would dry spray it with a clear cone 10 glaze.That sounds great but is it possible just sounds fishy to me.

 

 

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Guest Sherman   
Guest Sherman

Look I donot know so I m asking here. The kilns I have available to me fire at cone 10.I want to include some Celtic knot work ( black and white or many colours ).

 

 

I was toldthis can be possible putting the knot on the pot or bowl in a cone 4 black orsome colour and then after that would dry spray it with a clear cone 10 glaze.That sounds great but is it possible just sounds fishy to me.

 

 

 

Monna, if you apply a cone 4 glaze and then cover it with a cone 10 glaze and fire to cone 10, the cone 4 glaze will probably flux at a much lower temperature than the cone 10 glaze, and it will likely bleed into the cone 10 glaze, becoming obscured. In fact, even if both glazes were cone 10, you may have the same issue, depending on the composition of the glazes. A better approach might be to use a dark cone 10 glaze to apply the design, then protect it with wax resist (removing any excess glaze not covered by the wax, then glazing the rest of the piece in another cone 10 glaze. This way, one glaze does not cover the other glaze---they simply touch on the edges of the design.

 

As usual, I recommend trying this on a small piece before going for the whole pot.

 

Sherman

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