electric kiln problems 30 hour glaze firing
Posted 08 November 2012 - 09:28 PM
Am I going to have puddles of glaze on the shelves?
Posted 08 November 2012 - 09:42 PM
Contemporary Fine Colored Porcelain
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Posted 09 November 2012 - 09:19 AM
It should be fine if they were all cone 6 glazes.
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Professor of Ceramics; New Hampshire Insitute of Art
Posted 31 December 2012 - 01:29 AM
Fired another cone 6 glaze fire. Again, after 30 hours the cone in the kiln sitter never melted.
The glow from the kiln never got beyond orange. I need a pyrometers I guess.
Around 30 hrs I shut the kiln off. Over 1/2 the pots were glossy but the others were
Still chalky looking. Obviously not hitting temp. I guess I need to get an electrician to come
Check out the kiln. Glazes were amaco potters choice glazes. Think I can re-fire?
Posted 31 December 2012 - 02:38 AM
Amaco states that the temperature for PCs is cone 5-6, (2205-2269 degrees F). If some of the pieces are glossy and some are not where were the pieces that are glossy located in the kiln. Could this possibly be a zone fire kiln?
Posted 31 December 2012 - 09:00 AM
Have an electrician check the current with an ammeter to see if everything is working. The electrician should be able to pinpoint where there is a problem.
Posted 31 December 2012 - 11:30 PM
Posted 01 January 2013 - 12:40 AM
I gave up on plugs for this reason above a long time ago and hardwired all my electrics. Never had a plug issue since.
On this note Yedrow mentions the screws-clean your wire connections and coat with an oxidation prohibitor and retighten them down.