John Post on tue 1 may 01
Hi Frederick,
Everything is OK. This too happened to me. Alice told me
that it is normal for the ITC 213 to shed a little during
the first few firings. The amount that falls off will
decrease with each subsequent firing, until none is falling
off.
The elements are not losing all of their coating, this is
merely the excess that is coming off. If you want to, you
could fire it a couple of more times until it stops
shedding, and then apply a top coat of ITC #? that mel
applies to his kilns. I don't know the number for the
topcoat offhand.
I never bothered with a top coat on mine and it has
completely stopped shelling the itc 213 anyway, so you can
either mess with the topcoat or just let it go as is.
This summer I am spraying ITC on a kiln that has a computer
controller on it and converting it to a gas-electric. That
should be an interesting experiment.
Cheers,
John Post
> 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?
Fredrick Paget on tue 8 may 01
Recently I installed new Euclid elements in my Cone Art kiln and there no=
w
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 2=
13
diluted with a little water contained in a shallow sheetrock mud tray. Ne=
xt
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 IT=
C
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 tak=
e
the old elements out by breaking them up into a thousand little pieces wi=
th
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 coa=
t
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 ne=
w
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 th=
e
time I phoned ITC on Friday and spoke with a secretary who said they woul=
d
call me back but of course I can now understand why they never did.
Fred Paget
=46rom Fred Paget, Marin County, California, USA
william schran on wed 9 may 01
I've coated elements in 3 kilns with 213 and all 3 "spit the specks"
for a few firings then stopped. I believe this is normal.
Bill
H.M. Buchanan on fri 18 may 01
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
>
>
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