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Celia UK

Member Since 01 Jul 2012
Offline Last Active Yesterday, 10:30 AM

Posts I've Made

In Topic: Urgent Help! Electric Kiln Error / Mistake?

16 November 2015 - 03:53 AM

Thanks old lady - there's me thinking the smaller pieces are more vulnerable near the elements - you live and learn!

Mark - yes I understand the theory but this hole takes my thermocouple, which I'd have to remove to look in. I did think about that when I did the second glaze firing in this kiln, but thought that taking out might mess things up and even then, am not sure what I would do as a result of what I could see the cones doing! I've been using the cones more as a check on how they relate to the temperature I've set on the controller.

Thank you both!

In Topic: How Is This Done?

15 November 2015 - 03:37 PM

You might like to try Mn clay's graffito paper - it's like old fashioned carbon paper but with underglaze.

In Topic: Urgent Help! Electric Kiln Error / Mistake?

15 November 2015 - 11:24 AM

After showing a glaze expert my test tiles, cone packs and both the twice-fired and once-fired pieces, the view is that the long firing at 880oC will have caused significant chemical changes to the clay and also possibly the clay content of the glaze. This in combination with a thicker than necessary glaze layer probably caused the dramatic crawling of the glaze. Made the decision to get out the hammer and bin the 2nd half of the load, rather than risk a similar very messy firing.

Probably need to replace the elements in the kiln that failed to get past 900oC - having the definitive check on Wednesday.

Many thanks for all your comments and suggestions.

In Topic: The Great Pottery Throw Down

12 November 2015 - 03:29 PM

I've heard the 'explosion in the kiln' warning many times in the past - mainly when I was in school. It always sounded very melodramatic! I've only ever had 2 pieces shatter in the kiln, on both occasions because they weren't fully dry. Not because of trapped air.

In Topic: The Great Pottery Throw Down

12 November 2015 - 03:49 AM

I missed the comment from the Pansy lady! As you say Min - not really appropriate to be aired on the show. However, we don't know how the relationship between this group has developed and I know gay guys and girls who still make this kind of comment about themselves and amongst friends all the time, so perhaps it's part of normal culture for them?