Neon-Cat on mon 4 jan 10
nd it sure is not. I have some serious flaking
Hi Roxanne,
what is the feldspar or flux in the porcelain clay body?
Do you have the clay body recipe?
I would like to know if it is a potassium or a sodium feldspar or
something else and if the recipe contains mica or something similar,
for example.
The clay company should tell you that even if they do not want to give
you the recipe.
Adding acid and magnesium is usually not good. Both can increase the
chemical weathering of your clay and feldspar minerals that will then
impact the barrel. What have you been doing as far as adding acid and
besides the MgSO4 additions? Do you get deposits in the clay like some
of the others or just flakes and barrel corrosion?
Do you have or can you get the water analysis for your area? The
service provider should have this to give to you. Or do you know
off-hand whether or not you have hard or soft water? Or how your water
supply is treated?
With more clues we should be able to figure out a way to stop or
minimize the chemical reactions taking place in the pug. I'm sorry you
are having this problem; it should have a right, practical, and
affordable solution for all involved.
Thanks,
Marian
Neon-Cat
On Mon, Jan 4, 2010 at 9:33 AM, Roxanne Hunnicutt wrote:
> I think I asked this before but please be patient. ARE PEOPLE PAYING pete=
r
> pugger to get the coating on their pug mills? HOw much. I sure think P
> Pugger should fix this flaking problem! I was assured that porcelain use
> would be fine and it sure is not. I use porcelain intermittently only.
>
> I have sent them pictures of my barrel and it looks like a serous case of
> adolescent acne. And changes in the acidity of my clays does not seem to
> help.
>
> I have cleaned it and tried to scale it and started all over again with c=
lay
> that was supposed to be balance with epsom salts and that did not seem to
> fix the situation.
>
> This is so frustrating, to pay so much and to get such a problem with no
> easy solution.
>
> Have they subsequently changed the metal formula for new pug mills? Has a=
ny
> legal means been attempted to resolve this? Rox on OREGON who seriously l=
ove
> the machine otherwise!
>
celia hirsh on tue 5 jan 10
nd it sure is not. I have some serious flaking
Hi Roxanne,
you have my full sympathies for this frustrating situation. You should
check the ClayArt archives for the last twelve months, since this is a
discussion that has occurred sporadically, but without a perfect
solution.
So far, no one has determined what, exactly, is making this happen.
Although it was suggested that it's due to the alkalinity in
porcelain, it was only conjecture.Tests have revealed this to be
erroneous as the alkalinity level in most porcelains is the same as
stoneware. So you can stop the ridiculous and illogical business of
adding epsom salts.
An engineer I spoke with believes the corrosion to be due to the
incredibly low quality of the aluminum being produced, but, who knows?
I had the same problem with my Bailey. As a possible solution, Jim
Bailey has lined my pug mill with a stainless steel liner and as soon
as I get it back across the border, I'll let you know whether this is
a viable solution.
Have you spoken to Peter Pugger directly? The last time this
conversation arose on ClayArt, I received a long email from them
defending the quality of their product and affirming that they stand
behind what they sell.
Let us know what they offer to do for you.
Good luck,
Celia Hirsh
www.hirshpottery.com
Marcia Selsor on tue 5 jan 10
nd it sure is not. I have some serious flaking
I am not having any problems with my Frost in my Bailey pugger.
On Jan 5, 2010, at 7:47 AM, celia hirsh wrote:
> Hi Roxanne,
> you have my full sympathies for this frustrating situation. You should
> check the ClayArt archives for the last twelve months, since this is a
> discussion that has occurred sporadically, but without a perfect
> solution.
>
> So far, no one has determined what, exactly, is making this happen.
> Although it was suggested that it's due to the alkalinity in
> porcelain, it was only conjecture.Tests have revealed this to be
> erroneous as the alkalinity level in most porcelains is the same as
> stoneware. So you can stop the ridiculous and illogical business of
> adding epsom salts.
>
> An engineer I spoke with believes the corrosion to be due to the
> incredibly low quality of the aluminum being produced, but, who knows?
>
> I had the same problem with my Bailey. As a possible solution, Jim
> Bailey has lined my pug mill with a stainless steel liner and as soon
> as I get it back across the border, I'll let you know whether this is
> a viable solution.
>
> Have you spoken to Peter Pugger directly? The last time this
> conversation arose on ClayArt, I received a long email from them
> defending the quality of their product and affirming that they stand
> behind what they sell.
>
> Let us know what they offer to do for you.
> Good luck,
>
> Celia Hirsh
> www.hirshpottery.com
>
Marcia Selsor
http://www.marciaselsor.com
| |
|
