[Clayart] Snow Flake Crackle #4

ronroy at ca.inter.net ronroy at ca.inter.net
Fri Aug 31 17:00:36 EDT 2018


Good advice on how to fire to get the best from your glazes!

Thanks David - RR


Quoting David Woof <woofpots at hotmail.com>:

> Penny if you are sure you are burning out the clay crud (mel's word)  
> to prevent off gassing thru the glaze, I would next suspect the Neph  
> sy and test for holds near end of glaze maturation to allow adequate  
> time for off gassing and subsequent sealing and healing over of the  
> pin holes/craters....
>
> As soon as glazes turn visually glossy as seen thru peeps I initiate  
> a hold. At times this hold time is where I reach my desired cone  
> falling position.  Although my L&L is fully computer controlled I  
> still stay in the drivers seat and shut down manually by visually  
> observing cone maturation.
>
>
> As you may know; a hold at maturation temp many times results in  
> over firing which aside from runny glazes which can wreak havoc with  
> a good crackle but can also de-vitrify the glaze causing burned out  
> areas and more holes/craters.   Probably a clumsy sentence or  
> explanation as well bt I'm sure you get the point



Ron Roy
ronroy at ca.inter.net
Web page ronroy.net




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