Blebbing and blistering
Posted 02 July 2012 - 07:34 AM
I had glaze failures in my works. I used commercial base glaze for my recipes. When I added coloring oxide such mangan, zircon and stain of blue and brown, the glaze had succeed. But added red stain the glaze became blebbing (small air bubbles) and willl be blistering if broken out. Any idea why this happens? Any comment I really appreciate it.
Posted 05 July 2012 - 04:31 PM
Posted 08 July 2012 - 03:35 AM
Thanks for replying. I bought the base glaze from the supplier, so I didn't know what the recipe is? meanwhile I made my own body such as local clay, china clay, and feldspar. The glaze temperature is high fired, above 1200C.
Something that I wondered, I used same base glazes for all the oxide and stain colors but only red stain that had failure the rest were good. The surface become blebbing. I had tried to soak the temperature but the result still not good. May be any alternative solving?
Posted 10 July 2012 - 08:14 AM
Kiln Repair Tech
Owner, Neil Estrick Gallery, LLC
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