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Relay Failure During Glaze Firing

relay failure glaze firing re-firing

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#1 sivamc

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Posted 12 September 2013 - 08:46 PM

I had a relay fail during a Cone 5 glaze firing. The temp reached 1800 degrees and fired 10 and a half hours. The glazes were under fired  and looked chalky but they do not come off. I have replaced the bad relay and my question is: do I re-glaze before re-firing, just re-fire, or do I just throw the stuff away? 



#2 oldlady

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Posted 12 September 2013 - 09:27 PM

if your kiln is current, not an extra old one, contact the manufacturer.  they have someone who will help you with this.


"putting you down does not raise me up."

#3 Min

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Posted 12 September 2013 - 09:43 PM

Refire to ^5, the glazes will be fine. If you got to 1800F that is only ^06 so your glazes haven't melted yet, therefore the chalky appearance.



#4 bciskepottery

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Posted 12 September 2013 - 09:43 PM

You should be able to refire the glaze load.  The glaze is probably underfired; so, taking it up to the correct temperature should allow it to melt correctly. 



#5 sivamc

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Posted 12 September 2013 - 10:04 PM

Thank you all.  I thought that I could just re-fire.



#6 neilestrick

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Posted 13 September 2013 - 08:36 AM

If your relays have not been replaced in a few years, go ahead and replace them all. Chances are the others will fail soon, too. Write the date on the new ones with a marker so you'll know how old they are next time they fail.


Neil Estrick
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neil@neilestrickgallery.com





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