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What to do to fix Crummy Glaze?

Carlsbad, CA(Zone 10b)

Here's a picture of a cat I recently made showing the head where some of the glaze chipped off during the firing. I have a couple of questions about how to fix it.

1 - Why does glaze occasionally chip off in places when being fired? The instructor in my class says it's from being dirty, or I had oil on my hands, etc. I've had this happen a couple of times before and the one time I reglazed the chipped off sections it came off again, even though I made sure everything was clean. I'd like to fix this cat and am wondering what to do. I'm thinking I could sand it off a bit on the area where it came off using the white ceramic stone (forget what they're called) and then reapply. Any suggestions?

2 - I obviously don't like the way the purple or the blue glazes turned out. I was careful to apply three coats, although I have to admit I sometimes rush and am not sure the previous coats are completely dry. So do I need to sand it down lightly and then reapply, or just reapply a couple of coats making sure each is dry before adding the next?

Any help will be appreciated.

This message was edited Nov 27, 2012 8:10 PM

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