Wilkinson on mon 4 aug 97
For those of you that have had your fill of Gerstly Borate please bear with
me for at least one more time. I do apologize for bothering the group if
this problem was addressed but since I do mostly primitive type pottery I
didn't pay attention when the Gerstly issue was being discussed. Sorry
about that.
This weekend I found myself glazing pots I have had waiting for ages and
using glazes that have been around a good while. When I came to the ones
with a good percentage of Gerstly Borate I had to really work to loosen
the stuff off of the bottom. Since these are respectively 10 and 8 gallon
batches of glaze I don't think I want to get rid of them quit yet. Is
there anyone that could tell me what I could add to those glazes to keep
them from hardening up on the bottom?
Now that I have the kiln able to high-fire, I am going to have to fight
with the Glaze?! Sheesh!
Lori Wilkinson
Roswell, NM
Lorwilk@dfn.com
Lisa or Ginny on tue 5 aug 97
Wilkinson wrote: what I could add to those glazes to keep them from
hardening up on the bottom?
Try a spot of vinegar. I don't know WHY it works, but it does work for
me.
--
Lisa Skeen
Living Tree Pottery & Soaps
http://www.uncg.edu/~lpskeen
YesIAmRU?
cobbeldi on tue 5 aug 97
Lori, I have had a problem with Gerstley Borate based glazes sticking to
the bottom of the glaze bucket like cement. I found that adding 2% Epsom
Salts to the recipe eliminated the problem with no discernable differences
in the glaze. Hope this works for you.
Debra in Alabama
----------
> ----------------------------Original message----------------------------
> For those of you that have had your fill of Gerstly Borate please bear
with
> me for at least one more time. I do apologize for bothering the group if
> this problem was addressed but since I do mostly primitive type pottery I
> didn't pay attention when the Gerstly issue was being discussed. Sorry
> about that.
>
> This weekend I found myself glazing pots I have had waiting for ages and
> using glazes that have been around a good while. When I came to the ones
> with a good percentage of Gerstly Borate I had to really work to loosen
> the stuff off of the bottom. Since these are respectively 10 and 8 gallon
> batches of glaze I don't think I want to get rid of them quit yet. Is
> there anyone that could tell me what I could add to those glazes to keep
> them from hardening up on the bottom?
>
> Now that I have the kiln able to high-fire, I am going to have to fight
> with the Glaze?! Sheesh!
>
> Lori Wilkinson
> Roswell, NM
> Lorwilk@dfn.com
>
stevemills on wed 6 aug 97
Lori,
Leaving aside US branded suspending agents of which I have no
experience, I have used two: 1) Saturated solution of Calcium Chloride @
one dessert spoonful per UK gallon of mixed and balanced glaze, 2) good
old bentonite. CC works well with most BUT NOT ALL ingredients, e.g when
it encounters bone ash it sets glaze like concrete in the bucket.
Bentonite, in my experience, is vice free @ 2-3%, though mixing it in
with an already mixed glaze presents another problem: it won't!! That
said I mix it in if neccessary using a very small amount of glaze and a
domestic blender,making up slop in that and then adding to the main mix,
a bit like making up batter, the lazy way!
Steve.
>
>----------------------------Original message---------------------------
-
">Since these are respectively 10 and 8 gallon
>batches of glaze I don't think I want to get rid of them quit yet. Is
>there anyone that could tell me what I could add to those glazes to
keep
>them from hardening up on the bottom?"
>
>Now that I have the kiln able to high-fire, I am going to have to fight
>with the Glaze?! Sheesh!
>
>Lori Wilkinson
>Roswell, NM
>Lorwilk@dfn.com
>
--
Steve Mills
@Bath Potters Supplies
Dorset Close
Bath
BA2 3RF
UK
Tel:(44) (0)1225 337046
Fax:(44) (0)1225 462712
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