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Crackle Glazes: How To Fine Tune...


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#1 HAUKSBEE

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Posted 10 May 2010 - 06:16 PM

Assuming a crackle glaze with an average size crackle, how should the glaze be modified to make the crackle smaller? How to make them larger?

#2 hansen

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Posted 14 May 2010 - 04:10 PM

Hauksbee: Crackle indicates the glaze is almost a perfect fit. The most common way to make it fit is to just add clay. This should make the crackle larger, right? But if you recipe has no clay (and often crackle recipes don't) then you can't take clay away? So lower the alumina some other way. This probably isn't a technically correct way to formulate glazes for industry standards, but crackle isn't a proper glaze for kitchen ware which are needing sanitary qualities. But industry does adjust glazes in this manner so I am told.
h a n s e n

Assuming a crackle glaze with an average size crackle, how should the glaze be modified to make the crackle smaller? How to make them larger?




h a n s e n
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