John Rodgers on wed 12 jul 06
I have two new 24 inch cone 10 electric kilns - computerized - and I
need some shelves for firing at that temperature. These are Paragon
kilns and Paragon does not seem to carry shelves that are
full-blown-guaranteed-not-to-sag cone 10 types.
Would someone with experience with Cone 10 please recommend a source for
said shelves.?? I'm planning some crystal glaze work, and need at least
one kiln appropriately outfitted for the cone 10 crystal work.
TIA,
John Rodgers
Chelsea, AL
William & Susan Schran User on wed 12 jul 06
On 7/12/06 8:28 PM, "John Rodgers" wrote:
> Would someone with experience with Cone 10 please recommend a source for
> said shelves.?? I'm planning some crystal glaze work, and need at least
> one kiln appropriately outfitted for the cone 10 crystal work.
When I switch from my current 18" diam. Kiln to a 23" diam. I will be
purchasing Advancer shelves for electric kilns.
Here's a link:
http://www.kilnshelf.com/products_advancerElectric.cfm
We've been using Advancers at school, firing to ^10 reduction, no kiln wash
and the typical student glazing mistakes. Have had no problems getting glaze
drips and puddles off the shelves. Even had a clay meltdown that destroyed a
cordierite shelf, but came off the Advancers with a putty knife.
Been firing on them for a year and they are as flat as when we got them.
-- William "Bill" Schran
Fredericksburg, Virginia
wschran@cox.net
wschran@nvcc.edu
Deborah Woods on thu 13 jul 06
I don't know if they make cone 10 shelves, but I would highly reccommend
staying away from Thorley shelves right now. Out of 11 shelves I have
purchased in the last few months, 5 cracked up the middle on the very first
firing to cone 6. Like I said, I don't know if this will apply to you, but
it is a brand you might wish to avoid. I heard the company was bought out
by someone and that I am not the only one having this problem. The quality
has apparantly dropped.
Linda Fox Firstman on thu 13 jul 06
John,
I use high alumina shelves from Bailey. They are rated to cone 11.
Linda Fox
----- Original Message -----
From: "John Rodgers"
To:
Sent: Wednesday, July 12, 2006 7:28 PM
Subject: Electric Cone 10 Shelves
>I have two new 24 inch cone 10 electric kilns - computerized - and I
> need some shelves for firing at that temperature. These are Paragon
> kilns and Paragon does not seem to carry shelves that are
> full-blown-guaranteed-not-to-sag cone 10 types.
>
> Would someone with experience with Cone 10 please recommend a source for
> said shelves.?? I'm planning some crystal glaze work, and need at least
> one kiln appropriately outfitted for the cone 10 crystal work.
>
> TIA,
>
> John Rodgers
> Chelsea, AL
>
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Randy O'Brien on thu 13 jul 06
I also had a problem with Thorley shelves. I purchased 4 full shelves
last year and 3 of them
cracked in the first firing. One of them was a cap shelf. It was at
the top with nothing on it
and fired to cone 05 in a slow 12 hour computer controlled firing. They
all got radial cracks from
the edge to the center. The place I bought them from has a policy of no
returns on kiln
shelves, so I was out $120 ($40 per shelf).
Randy
Tucson, Arizona
Steve Slatin on thu 13 jul 06
Deborah --
FWIW -- I went to get some shelves from a vendor I trust (Tacoma Clay Art Center)
and discussed just this issue with them. They told me that they'd gotten some
bad shelves last year, but Laguna stood behind them and replaced every bad shelf.
(Tacoma CAC did the same for anyone who got a crack in a shelf.) The only loss
to the user was having to go back to return the shelf. The newer shelves they've gotten have, thus far, not been returned by users. CAC seems to have pretty brisk turnover; it may be that your supplier is selling Thorleys made at the wrong time.
I have a 4 hour trip to the vendor, so I bought round high-alumina. For me the possible loss of a half work day just to replace a bad shelf was too much overhead. The more standard shelves I got were seemingly identical to those I got from L&L with my kiln. If I lived closer, though, I might have taken a chance on a 'new' Thorley. I have a few old ones, and they are lighter and possibly a little easier to keep clean.
Usual disclaimers are applicable --
Steve Slatin
Deborah Woods wrote:
I don't know if they make cone 10 shelves, but I would highly reccommend
staying away from Thorley shelves right now. Out of 11 shelves I have
purchased in the last few months, 5 cracked up the middle on the very first
firing to cone 6. Like I said, I don't know if this will apply to you, but
it is a brand you might wish to avoid. I heard the company was bought out
by someone and that I am not the only one having this problem. The quality
has apparantly dropped.
---------------------------------
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Deborah Woods on fri 14 jul 06
Hi Steve.
Laguna has agreed to replace the shelves thus far, with shelves that also
cracked. And these shelves were thicker ones, which I thought might be a
safer bet not to crack, but, not so. You probably have a point. All these
shelves might be from an original failed run. And maybe I might have better
luck now, but I think it's not worth the hassle and I am looking for another
brand. Fool me once, shame on them. Fool me twice shame on me. Fool me
three times? I don't think so!
Deborah
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