C TRIPP on sat 19 may 01
Hi,
I followed Nils Lou's instructions for cleaning and then dipping my new
elements in ITC 213 last November. I fired them in a 06 bisque and had
brown flakes everywhere. I called ITC and Alice reassured me that that was
normal and that I could even expect this to happen two or three more times
until things settled down. She suggested I do another bisque firing before
doing a glaze firing. I did and had flakes again which I vacumned. Then I
did a glaze to ^6 and the few flakes produced just brushed right off and
since then, no problem.
I hope this information is of some assistance.
Best regards, Carol
On Fri, 18 May 2001 10:09:44 -0500, Ceramic Arts Discussion List wrote:
> I also had a disappointing result with the ITC 213. Assuming elements
and
> metal stilts were the same alloy, I thought what would protect one would
> also extent the life of the other. Testing showed the ITC scaled off the
> stilts in the firing no matter how carefully I cleaned them. The bare
metal
> is brighter than it would have been fired without ITC but I don't think
I'm
> willing to redip every stilt before every firing.
> Judi Buchanan,Heidelberg, Mississippi.
> ----- Original Message -----
> From: "Fredrick Paget"
> To:
> Sent: Tuesday, May 08, 2001 1:36 PM
> Subject: ITC 213
>
>
> > Recently I installed new Euclid elements in my Cone Art kiln and there
now
> > seems to be a problem with the ITC coatings .
> >
> > The new elements were cleaned with chlorine bleach and rinsed and
dried.
> > They were then coated with ITC213 by running them through a bath of ITC
> 213
> > diluted with a little water contained in a shallow sheetrock mud tray.
> Next
> > they were hung up to dry and stored about a week before installing.
> >
> > Since the old elements and the inside of the kiln had been coated with
ITC
> > 100 and ITC 296 top coat put on pretty heavily about 3 years ago, the
old
> > elements were firmly locked in place, and I had a devil of a time
getting
> > them out. A good deal of brick was broken in the process and I had to
take
> > the old elements out by breaking them up into a thousand little pieces
> with
> > longnose pliers.
> >
> > Then I ground the edges of the grooves with a Dremel tool so I could
get
> > the new elements into the grooves. Before installing the new elements,
I
> > vacuumed out the kiln and wet the walls with water and sprayed a thin
coat
> > of ITC100 into the grooves. Next I installed the new elements, This
whole
> > job took the best part of two days.
> >
> > Next I fired the empty kiln to cone 020.
> >
> > After cooling I sprayed the inside of the kiln with ITC 296 and fired
to
> > cone 6.
> > Then I did a Crystal glaze firing that got too hot because of a new
kiln
> > controller that I had installed and was not corectly calibrated for my
new
> > platinum thermocouple. I think it went up to about cone 12.
> > On the cooling down of the kiln cycle the elements began shedding their
> > coatings and spit black specks all over the ware. The glazes did not
trap
> > the specks so it must have happened somewhere in the later part of the
> > cooling cycle when the glazes had set up solid.
> >
> > The ware was OK and the specks could be brushed of easily.
> >
> > What did I do wrong?
> > Have my elements shed all the ITC 213?
> > What should I do next?
> >
> > This all happened the day before Alice died and not knowing of this at
the
> > time I phoned ITC on Friday and spoke with a secretary who said they
would
> > call me back but of course I can now understand why they never did.
> >
> > Fred Paget
> >
> >
> > >From Fred Paget, Marin County, California, USA
> >
> >
>
____________________________________________________________________________
> __
> > Send postings to clayart@lsv.ceramics.org
> >
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> >
> > Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
>
______________________________________________________________________________
> 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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