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sivamc

Relay Failure During Glaze Firing

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sivamc    0

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? 

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oldlady    1,323

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

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Min    783

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.

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bciskepottery    925

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. 

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neilestrick    1,381

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.

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