[Clayart] old cones

Arnold Howard arnoldhoward at gmail.com
Mon Oct 11 13:38:46 UTC 2021

A few days ago, a customer came to my house with a used kiln she had just purchased. I’ll have to write a kiln story about it later. The kiln was in the back of her truck. 

One of the cone supports was covered with a blob that had once been a cone. It looked like a thick coating of glaze. The cone had stuck to the supports, which prevented the weight from dropping. 

Before each firing, pull out the cone supports and examine the kiln wash. The coating should be thin and without cracks. Wipe off and reapply if necessary from a tiny finger nail polish bottle. 

Arnold Howard

Sent from my iPhone

> On Sep 24, 2021, at 1:36 PM, mel jacobson <melpots at mail.com> wrote:
> We have been experiencing some sticky cones and some
> over fires on one electric kiln.  I will probably
> exchange the entire norton kiln sitter...I have all
> new parts...But, one of our vendors asked colleen.."are your
> cones really old?"  yes, like 25 year old boxes.
> Arnold and I have no reason to believe cones can get old.
> It seems to be getting crazy.  Arnold likes to advise folks
> to keep a small bottle with thick kiln wash to dab on the
> cone holders.  I have used itc in the past. but, not on this
> kiln.
> I know, I know...what is the recipe for kiln wash for
> this sort of application.  ?
> what have veteran potters experienced with this issue.?
> (colleen is now using a new box of cone 08 bars, and she
> is experiencing kiln firing fear.)
> We had the cone packs blow up in the baby stoneware and
> i fired it with two pyrometers and color.  hit cone 11 perfect.
> Had one pyrometer stick at 1900...threw that one out...hit it with
> a brick.
> I am sick of this issue.
> Mel
> website: www.melpots.com
> www.melpots.com/CLAYART.HTML

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