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      Moderators needed!   12/08/2017

      Ceramic Arts Network is looking for two new forum moderators for the Clay and Glaze Chemistry and Equipment Use and Repair sections of the Ceramic Arts Network Community Forum. We are looking for somebody who is an active participant (i.e. somebody who participates on a daily basis, or near daily) on the forum. Moderators must be willing to monitor the forum on a daily basis to remove spam, make sure members are adhering to the Forum Terms of Use, and make sure posts are in the appropriate categories. In addition to moderating their primary sections, Moderators must work as a team with other moderators to monitor the areas of the forum that do not have dedicated moderators (Educational Approaches and Resources, Aesthetic Approaches and Philosophy, etc.). Moderators must have a solid understanding of the area of the forum they are going to moderate (i.e. the Clay and Glaze Chemistry moderator must be somebody who mixes, tests, and has a decent understanding of materials). Moderators must be diplomatic communicators, be receptive to others’ ideas, and be able to see things from multiple perspectives. This is a volunteer position that comes with an honorary annual ICAN Gold membership. If you are interested, please send an email outlining your experience and qualifications to jharnetty@ceramics.org.
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gypsy

cone 6 clay with 04-06 glazes

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Neil is right ... You will either under fire the clay or over fire the glaze.

Under fired clay is weak and over fired glazes crack and/or run.

 

However ... It all depends on what you want to do and how you want to do it.

If you love the glaze color and can't get it any other way then you have to adapt.

You could fire the clay to its temperature of Cone 6 then glaze it and re fire to Cone 04-06

If it were a sculpture or other non functional object you could just glaze and fire the whole thing cooler ... Maybe not as low as Cone 04 ... you might try higher temps to see what happens. Maybe Cone 2, 3 or 4? Put it on something so if it runs you won't have a shelf to clean.

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Neil is right ... You will either under fire the clay or over fire the glaze.

Under fired clay is weak and over fired glazes crack and/or run.

 

However ... It all depends on what you want to do and how you want to do it.

If you love the glaze color and can't get it any other way then you have to adapt.

You could fire the clay to its temperature of Cone 6 then glaze it and re fire to Cone 04-06

If it were a sculpture or other non functional object you could just glaze and fire the whole thing cooler ... Maybe not as low as Cone 04 ... you might try higher temps to see what happens. Maybe Cone 2, 3 or 4? Put it on something so if it runs you won't have a shelf to clean.

 

 

 

Smart, Smart

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gypsy, your title suggests that you might think that cone 06 is hotter than cone 04. the reverse is true. maybe i am misreading you or maybe i have always assumed that whenever anyone talks about a range of temperatures the lower number is mentioned first. from low to high.

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I often use earthenware glazes on a stoneware body...sometimes it crazes, sometimes not...I happen to love the crackle effect though, but if you're glazing items that need to be food safe, it's not so good.

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The answer depends on what Gypsy is making and what glaze she is using.

 

Chris is right, re-firing up to ^6 and then glazing at ^06 probably is the most common solution.

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