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Matte glazes


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#1 elainecarroll

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Posted 05 November 2012 - 01:52 PM

I am very new to making glazes and would really appreciate some help. I am looking for some matte glaze recipes that would allow red iron oxide to show through. If anyone can point me in the right direction, I surely would appreciate it. Thanks Elaine

#2 neilestrick

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Posted 05 November 2012 - 05:54 PM

Firing to what cone and atmosphere?
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#3 elainecarroll

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Posted 05 November 2012 - 08:37 PM

Firing to what cone and atmosphere?

Sorry, Cone 6 oxidation

#4 neilestrick

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Posted 06 November 2012 - 01:29 PM

To get iron to show through in cone 6 oxidation, it takes a lot more iron than in reduction. I used to use a 10% iron slip in reduction, but use 20% iron in oxidation. Whether you're using a slip or straight iron oxide, it will show through most matte glazes if the iron/slip is thick enough. Glazes that are matte due due crystal growth rather than due to under-firing will tend to show it more because it will get into the melt more. Test, test, test....
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#5 elainecarroll

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Posted 06 November 2012 - 06:56 PM

To get iron to show through in cone 6 oxidation, it takes a lot more iron than in reduction. I used to use a 10% iron slip in reduction, but use 20% iron in oxidation. Whether you're using a slip or straight iron oxide, it will show through most matte glazes if the iron/slip is thick enough. Glazes that are matte due due crystal growth rather than due to under-firing will tend to show it more because it will get into the melt more. Test, test, test....

Thanks so much, that is exactly the info I needed. I will start testing.




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