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      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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Tinman

Red under glaze

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I am new to ceramics and have started working with cone 10 crystal glazes. I am trying to get red under the crystal glaze. I have tried adding copper oxide to the glaze firing it than putting it through reduction at 1700 F for 15 to bring out the red. It has not worked, I sometimes get a little pink but mostly tan. Should I try a red slip and where can I get a formula for it?

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I am new to ceramics and have started working with cone 10 crystal glazes. I am trying to get red under the crystal glaze. I have tried adding copper oxide to the glaze firing it than putting it through reduction at 1700 F for 15 to bring out the red. It has not worked, I sometimes get a little pink but mostly tan. Should I try a red slip and where can I get a formula for it?

 

 

A good slip for greenware, 1000 g. of your clay (dried, pulverized), 700g water, 250g Bright Red (inclusion). I really don't know how this would react with the crystal glaze but for sure is a very nice red slip.

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i know some folks who have had great success using Duncan "Really Red" at ^10. try it under, on top of, or inside your glaze. only problem i have with it is you get a "crayola" red from the mason stain as opposed to a true copper red. you could add it to any slip recipe if you wanted to color it that way as well. it's all about experimentation!

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Copper reds are very specific, touchy formulas that have to be fired just right. Just adding copper to a glaze will most likely not give you a strong red. I would start by comparing some copper red formulas to your glaze recipe to get an idea of what's needed.

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