Clyde Tullis on fri 20 aug 10
I want to salt bisque , 06 or there abouts, in our updraft kiln and wante=
=3D
d
to know if there would be an appreciative amount of residual salt if any
left over that could effect a subsequent firing. The kiln is coated wit=
=3D
h
ITC. I have fired salt bisque for years but always in an established,
dedicated salt kiln. Does anyone have experience with this?
Robert Harris on fri 20 aug 10
My guess is that you'd never get rid of all the salt. Whatever coating
you have, the salt would still coat the inside of the kiln to some
extent, and this would come off every time you fired the kiln
subsequently.
This happens with chrome a lot. Once you've fired a chrome based glaze
in your kiln your tin whites are always going to look slightly (maybe
undetectably) pink.
I once heard a story (perhaps apocryphal) about a large tile
manufactory in the UK that made a large order of white tiles for a
large local public swimming pool. Several years later (after the
original kiln had been dismantled) they received an order for some
replacement tiles. However despite replicating the glaze exactly the
new tile came out whiter - the old tiles were slightly pink. So
slightly that no-one could tell until they compared the old glaze to
the new glaze. Eventually they figured out that it was the chrome from
previous firings in the old kiln that had altered the glaze.
Apparently they dug up the old bricks and fired them alongside the
tiles to make new ones (that part sounds the most unlikely to me!).
Anyway I would not put salt in your kiln unless you wish to turn it
into a dedicated salt kiln.
R
On Fri, Aug 20, 2010 at 8:44 AM, Clyde Tullis wrote:
> I want to salt bisque , 06 or there abouts, in our updraft kiln and wante=
=3D
d
> to know if there would be an appreciative amount of residual salt if any
> left over that could effect a subsequent =3DA0firing. =3DA0The kiln is co=
ated=3D
with
> ITC. =3DA0I have fired salt bisque for years but always in an established=
,
> dedicated salt kiln. Does anyone have experience with this?
>
--=3D20
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Robert Harris on fri 20 aug 10
Well, Hank Murrow certainly knows a lot more than I. I bow to his
superior experience. I do wonder however, if type of bricks matter?
Soft vs hard vs .... And how "porous" the brick is?
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