Jean Lehman on sat 9 nov 02
I recently invested in advancer shelves for my new L&L kiln. I am
pretty sure the usual kiln wash won't stick to them. Does anyone know
what to use?
The company that sold them to me said kiln wash might not be
necessary, that glaze drips "usually" pop right off. She did say that
porcelain users do sometimes have problems though. (I am using B Mix,
a porcelaineous stoneware.)
Since I fire mostly student work at this point, I am not willing to
take a chance having paid $200/per shelf unless I am SURE they will
scrape or pop off. I fire at cone ten, so the stuff is pretty hard!
Any advice???
Thanks,
Jean
--
-------------------->
Jean Lehman,
jlehman73@earthlink.net
in Lancaster, PA
http://www.art-craftpa.com/sfpn1.html
Check in to see The 10th annual (2002)
Strictly Functional Pottery National exhibition, juried by Jack
Troy. The 2003 SFPN will be juried by Wayne Higby. Application is on
the web site, and may be downloaded. (Due date: Jan 15, 2003!)
Rikki Gill on sat 9 nov 02
Hi Jean, I have used advancers for about 5 years now. It is true, you don't
need kiln wash. I use a tool whose name I don't know except as a 'red
handled scraper' that removes all glaze spots from the shelves. I fire as
high as cone 11.
The porcelain problem is that the feet of pots sometimes stick to the
shelves. I have also had problems with the kiln posts sticking. What I do
is put alumina hydrate mixed with wax resist on the bottom of pots and
posts, and this helps quite a lot. I add a teaspoon of so of alumina hydrate
to about a cup of wax. Sometimes more. It doesn't seem to matter if you
are not exact.
I love my advancers. They are so light weight, and they don't warp.
Rikki Gill in Berkeley
--- Original Message -----
From: "Jean Lehman"
To:
Sent: Saturday, November 09, 2002 11:29 AM
Subject: Advancer Shelves - Kiln wash???
> I recently invested in advancer shelves for my new L&L kiln. I am
> pretty sure the usual kiln wash won't stick to them. Does anyone know
> what to use?
>
> The company that sold them to me said kiln wash might not be
> necessary, that glaze drips "usually" pop right off. She did say that
> porcelain users do sometimes have problems though. (I am using B Mix,
> a porcelaineous stoneware.)
>
> Since I fire mostly student work at this point, I am not willing to
> take a chance having paid $200/per shelf unless I am SURE they will
> scrape or pop off. I fire at cone ten, so the stuff is pretty hard!
>
> Any advice???
>
> Thanks,
>
> Jean
>
>
>
> --
> -------------------->
> Jean Lehman,
> jlehman73@earthlink.net
>
> in Lancaster, PA
> http://www.art-craftpa.com/sfpn1.html
> Check in to see The 10th annual (2002)
> Strictly Functional Pottery National exhibition, juried by Jack
> Troy. The 2003 SFPN will be juried by Wayne Higby. Application is on
> the web site, and may be downloaded. (Due date: Jan 15, 2003!)
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
>
Hank Murrow on sat 9 nov 02
On Saturday, November 9, 2002, at 11:29 AM, Jean Lehman wrote:
> I recently invested in advancer shelves for my new L&L kiln. I am
> pretty sure the usual kiln wash won't stick to them. Does anyone know
> what to use?
>
> The company that sold them to me said kiln wash might not be
> necessary, that glaze drips "usually" pop right off. She did say that
> porcelain users do sometimes have problems though. (I am using B Mix,
> a porcelaineous stoneware.)
>
> Since I fire mostly student work at this point, I am not willing to
> take a chance having paid $200/per shelf unless I am SURE they will
> scrape or pop off. I fire at cone ten, so the stuff is pretty hard!
>
> Any advice???
>
> Dear Jean;
I have a mix of Advancers and the more expensive Crystar setters. I
used them without trouble with even pretty 'wet' bodies by spreading a
thin coat of dry Alumina oxide with a slotted brick, until getting some
Zirconia-reinforced wash from Tacoma Clayart. Sprayed it on in very
thin coats, drying a day between, just as recommended. Now the damn
WASH picks up and sticks on the porcelain bodies. I will have to sand
blast all the shelves now. I recommend that you stick to a thin dry
coating of Alumina oxide spread evenly over each shelf. The tiny
particles of Alumina act like ball bearings, allowing the pots to
shrink and not stick to the setter.
Best, Hank in Eugene
murrow.biz/hank
Doug Van Sickle on tue 12 nov 02
Better yet, just put a spoonful of alumina hydrate in your wax resist. Why
coat the whole shelf?
PS. Make sure to keep it stirred or shaken up to keep the alumina in
suspension though.
> From: Hank Murrow
> Reply-To: Ceramic Arts Discussion List
> Date: Sat, 9 Nov 2002 15:01:24 -0800
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: Re: Advancer Shelves - Kiln wash???
>
> On Saturday, November 9, 2002, at 11:29 AM, Jean Lehman wrote:
>
>> I recently invested in advancer shelves for my new L&L kiln. I am
>> pretty sure the usual kiln wash won't stick to them. Does anyone know
>> what to use?
>>
>> The company that sold them to me said kiln wash might not be
>> necessary, that glaze drips "usually" pop right off. She did say that
>> porcelain users do sometimes have problems though. (I am using B Mix,
>> a porcelaineous stoneware.)
>>
>> Since I fire mostly student work at this point, I am not willing to
>> take a chance having paid $200/per shelf unless I am SURE they will
>> scrape or pop off. I fire at cone ten, so the stuff is pretty hard!
>>
>> Any advice???
>>
>> Dear Jean;
>
> I have a mix of Advancers and the more expensive Crystar setters. I
> used them without trouble with even pretty 'wet' bodies by spreading a
> thin coat of dry Alumina oxide with a slotted brick, until getting some
> Zirconia-reinforced wash from Tacoma Clayart. Sprayed it on in very
> thin coats, drying a day between, just as recommended. Now the damn
> WASH picks up and sticks on the porcelain bodies. I will have to sand
> blast all the shelves now. I recommend that you stick to a thin dry
> coating of Alumina oxide spread evenly over each shelf. The tiny
> particles of Alumina act like ball bearings, allowing the pots to
> shrink and not stick to the setter.
>
> Best, Hank in Eugene
>
> murrow.biz/hank
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
Charles Moore on thu 14 nov 02
Hank,
I do not have Advancer shelves, but I wonder if Mel's recommendation for
using ITC to coat shelves might be helpful with Advancers?
Charles
Sacramento
Hank wrote:
> I have a mix of Advancers and the more expensive Crystar setters. I
> used them without trouble with even pretty 'wet' bodies by spreading a
> thin coat of dry Alumina oxide with a slotted brick, until getting some
> Zirconia-reinforced wash from Tacoma Clayart. Sprayed it on in very
> thin coats, drying a day between, just as recommended. Now the damn
> WASH picks up and sticks on the porcelain bodies. I will have to sand
> blast all the shelves now. I recommend that you stick to a thin dry
> coating of Alumina oxide spread evenly over each shelf. The tiny
> particles of Alumina act like ball bearings, allowing the pots to
> shrink and not stick to the setter.
>
> Best, Hank in Eugene
>
> murrow.biz/hank
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Craig Martell on fri 15 nov 02
Charles responded to Hank by asking:
>I do not have Advancer shelves, but I wonder if Mel's recommendation for
>using ITC to coat shelves might be helpful with Advancers?
Hi Charles et al:
My opinion is that ITC would be a very expensive approach to protecting
shelves, of any type, from glaze drips etc and keeping porcelain feet from
chipping due to adhesion to shelves.
I use advancers and crystars and fire porcelain in reduction to cone
10-11. I use a wash of 75% calcined alumina oxide and 25% kaolin. I spray
a thin coat on the shelves and I don't need to rewash very often. An
occasional touch up and that's about it. I use this wash on my acme marls
plate setters too and it works extremely well. ITC by comparison is very
expensive and I don't think it's any better and perhaps not as good. Yes,
I've tried tests of ITC on shelves in my reduction and salt kiln and I
prefer the alumina/kaolin wash. My feeling about ITC is that it is not a
miracle product that performs well in every application.
regards, Craig Martell Hopewell, Oregon
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