Fredrick Paget on mon 3 mar 03
Unload the kiln and clean off the talc glop. Talc is a lowfire flux and
will glue your pots to the shelves.
Fred
> Our studio assistant was about to kiln wash our brand new
>shelves. There was not enough kiln wash so he had to make more. He used talc
>instead of EPK. The mixture was probably about two-thirds good kiln wash to
>one-third wrong kiln wash. Is the talc gonna mess things up? Please keep in
>mind the kiln wash is already on the shelves and the kiln is already loaded.
>Please we need an answer ASAP.
>Thanks in advance:
>Cindy & Mark
>The Mudpit
>
>______________________________________________________________________________
>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/
>
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>melpots@pclink.com.
From Fred Paget, Marin County, California, USA
Donn Buchfinck on mon 3 mar 03
unload the kiln
hose off the shelves
at least they didn't paint the shelves with celedon
how is this,
I am making kiln wash, its my 3rd pottery class, I run out of this stuff
called alumina, so I look in the bins and there is this stuff called custer,
looks similar, so I add it in,
the kiln wash was supposed to be
flint, kaolin and alumina,
so just think of what I made.
I also touched up parts of the inside of the kiln,
when it opened the grad students and the professor wanted to know what
happened, I just said I used the bucket labled KILN WASH. I scraped shelve
for around 12 hours to get them clean.
I stuck to my guns and here I am MFA and all.
Wash the stuff off before you fire the kiln,
But I will be interested in hearing if it is ok??
Donn Buchfinck
Cindy Gatto on mon 3 mar 03
Our studio assistant was about to kiln wash our brand new
shelves. There was not enough kiln wash so he had to make more. He used talc
instead of EPK. The mixture was probably about two-thirds good kiln wash to
one-third wrong kiln wash. Is the talc gonna mess things up? Please keep in
mind the kiln wash is already on the shelves and the kiln is already loaded.
Please we need an answer ASAP.
Thanks in advance:
Cindy & Mark
The Mudpit
Marcia Selsor on mon 3 mar 03
I think there is sufficient magnesium, a flux, in Talc to create
problems for the kiln wash IMHO. Really have never experienced this
situation.
Marcia Selsor
Cindy Gatto wrote:
> Our studio assistant was about to kiln wash our brand new
> shelves. There was not enough kiln wash so he had to make more. He used talc
> instead of EPK. The mixture was probably about two-thirds good kiln wash to
> one-third wrong kiln wash. Is the talc gonna mess things up? Please keep in
> mind the kiln wash is already on the shelves and the kiln is already loaded.
> Please we need an answer ASAP.
> Thanks in advance:
> Cindy & Mark
> The Mudpit
>
> ______________________________________________________________________________
> 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.
>
--
Tuscany in 2003
http://home.attbi.com/~m.selsor/Tuscany2003.html
Michael Wendt on tue 4 mar 03
Cindy,
I used to make a high fire clay body in the early 70s that was Helmer and
talc. It was about 2/3 Helmer and 1/3 talc and it fired up shiny like a self
glazing body so my guess is you will be sorry if you fire these shelves with
the talc coating. Oddly, the "Ceramic Science for the Potter" book mentions
that you can make refractories with low a cte if you get the right
proportion of talc and kaolin but I think it is much less than 1/3.
Be safe, unload and clean those shelves and do it right. Imagine having to
replace them all because numerous pots are stuck to them. Nice sculpture
though...
Regards,
Michael Wendt wendtpot@lewiston.com
Wendt Pottery
2729 Clearwater Avenue
Lewiston, Idaho 83501
1-208-746-3724
wendtpottery.com
John Weber on tue 4 mar 03
If you could tell us the formula for the original kiln wash and the formula
for the mistake we could run it through glaze calculation software to see
how close to a glaze your new kiln wash might be.
Lily Krakowski on tue 4 mar 03
This is serious guessing time for me--Talc is magnesium and silica. The
rest of the wash is alumina and silica. If the error were mine I would
calculate the recipe into a molecular formula and see how FAR from my
firing temp it is....By FAR I mean THAT MUCH HIGHER MELTING POINT. But as I
am a coward, from a long distinguished line of 'fraidy cats, I would pop a
test in the test kiln.....Even if you have to unstack the kiln, it is better
than a disaster....
Try to forgive the apprentice....We all have been there...And probably it is
better to get that stuff off NOW, since you said the shelves are new and
have not been fired yet...
Cindy Gatto writes:
> Our studio assistant was about to kiln wash our brand new
> shelves. There was not enough kiln wash so he had to make more. He used talc
> instead of EPK. The mixture was probably about two-thirds good kiln wash to
> one-third wrong kiln wash. Is the talc gonna mess things up? Please keep in
> mind the kiln wash is already on the shelves and the kiln is already loaded.
> Please we need an answer ASAP.
> Thanks in advance:
> Cindy & Mark
> The Mudpit
>
> ______________________________________________________________________________
> 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.
Lili Krakowski
P.O. Box #1
Constableville, N.Y.
(315) 942-5916/ 397-2389
Be of good courage....
Bill Karaffa on tue 4 mar 03
Hi Cindy,
If they were my shelves I would unload and scrape em down. Wouldn't want to
start their life out on the wrong foot.
I had an apprentice who used custer spar instead of flint in the wash mix on
some silica carbide shelves 20 years ago. They still need extra attention
even after all this time.
Bill Karaffa
Firemouth Pottery and Gallery
http://fp1.centurytel.net/karaffa
Our studio assistant was about to kiln wash our brand new
shelves. There was not enough kiln wash so he had to make more. He used talc
instead of EPK. The mixture was probably about two-thirds good kiln wash to
one-third wrong kiln wash. Is the talc gonna mess things up? Please keep in
mind the kiln wash is already on the shelves and the kiln is already loaded.
Please we need an answer ASAP.
Thanks in advance:
Cindy & Mark
The Mudpit
____________________________________________________________________________
__
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 tue 4 mar 03
Cindy,
I would take the trouble to remove the ware and clean the shelves before
firing. Talc is 1/3 Magnesium and 2/3 Silica. The silica is probably not a
problem; the magnesium might well flux the mix.
Charles
Sacramento
----- Original Message -----
From: "Cindy Gatto"
To:
Sent: Monday, March 03, 2003 7:23 PM
Subject: Kiln wash mistake - help
> Our studio assistant was about to kiln wash our brand new
> shelves. There was not enough kiln wash so he had to make more. He used
talc
> instead of EPK. The mixture was probably about two-thirds good kiln wash
to
> one-third wrong kiln wash. Is the talc gonna mess things up? Please keep
in
> mind the kiln wash is already on the shelves and the kiln is already
loaded.
> Please we need an answer ASAP.
> Thanks in advance:
> Cindy & Mark
> The Mudpit
>
>
____________________________________________________________________________
__
> 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.
william schran on tue 4 mar 03
Hope you haven't fired the kiln yet. Get the stuff off the shelves!
Start all over, otherwise disaster!
Bill
> Our studio assistant was about to kiln wash our brand new
>shelves. There was not enough kiln wash so he had to make more. He used talc
>instead of EPK. The mixture was probably about two-thirds good kiln wash to
>one-third wrong kiln wash. Is the talc gonna mess things up? Please keep in
>mind the kiln wash is already on the shelves and the kiln is already loaded.
>Please we need an answer ASAP.
>Thanks in advance:
>Cindy & Mark
>The Mudpit
>
>______________________________________________________________________________
>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.
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