gerholdclay at gmail.com
Sat Jul 15 07:06:58 EDT 2017
Iron oxide does not change under any conditions that your supply would experience. I have been using the same supply of RIO for thirty plus years and no changes have occurred. Probably a problem with some other chemical.
Sent from my iPad
> On Jul 13, 2017, at 8:20 PM, Porcelain byAntoinette <porcelainbyantoinette at gmail.com> wrote:
> Hi guys. I have mixed up a iron red glaze that I did not mix for a while. I used ingredients that is 10 years old and older end the end result was a flat brown instead of the reach read brown that it was before.
> I repeated the recipe, thinking I made a mistake, ending up with the same results.
> Then I thought maybe I used the wrong recipe and compared it with similar recipes getting to the conclusion that I did not make a mistake.
> So someone said the problem is the iron that changed over time. This was the first time I heard that in all the 36+ years I am in clay. Is that true and if so, can I fix it? I assume that if that is true, it has to do with the oxidation process.
> Antoinette Badenhorst.
> Sent from my iPhone
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