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Post by gillbanks on Feb 20, 2016 17:57:33 GMT -6
I'm wondering how long my glazes will last a) in powder form and b) in liquid form if I mix them ahead of time. I think I read somewhere that crystalline glazes go off? I want to mix some to use in the next 2 months & others to use in about 6-8 months from now. Does anyone know?
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Post by sherri on Feb 20, 2016 22:23:50 GMT -6
I consider myself a bit of a newbie but I will tell you what I know since no one has got back to you yet. If you have lithium (which is also in spodomene and petalite if I remember correctly), you need to use the glaze right away or within a couple of weeks at most if it is wet. That is why I usually use no lithium or use use about .1% at most.
Also, CMC breaks down the organic components in your glaze eventually if it's wet so it's said not to make glaze store well. I use Epson salts 1% in my glazes to thicken them up for application instead of CMC because of the storage issue.
Additionally, if you have nickel in a wet glaze, you need to use it immediately (and remember that it is the opposite of food safe).
If you stay away from those components, I have heard of people storing their wet glazes up to 2 years or more.
I haven't heard of people having any issues with storing mixed powdered glazes.
If you don't have it already, I strongly recommend Fara Shimbo's book. She gives so much information on glaze components and interactions.
Good luck with your work!
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Post by tileman2 on Feb 21, 2016 21:20:59 GMT -6
Sherri: Your advice is correct-very good for a newbie  Tom |
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Post by gillbanks on Feb 23, 2016 16:14:43 GMT -6
Thank you both. One of my glazes is nickel, but I'm not using spudomene or lithium, so I should be able to make the other glazes up. That's going to save me a lot of time. I've got two of Farah Shimbo's books, but haven't seen anything about glaze storage in them yet.
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