tony@DIGITALFIRE.AB.CA on thu 5 jun 03
I agree. I suppose if a glaze contains a small amount
of GB a read-and-believe approach could work.
As I noted, I am sure you do have access to Turkish
Ulexite, it is shipped around the world. Check B2O3.com
out of the UK. I was in Turkey with Peter Cave, he runs
this site. I\'ll bet he knows where to get it in Europe.
Send me your glaze and I will show you how to substitute
using Ulexite.
-------8<--------
After all this talk and intense research to develop a
sub.for G.B., how can it be that in print in a Ceramic publication
to simply substitute either or G.B. or 3134? Many
will believe this to be true... It says so right there.
Irresponsible. People just starting...may be terribly frustrated
and give up way too early in their practical learning.
Irresponsible....this is not an acceptable chemical sub. material.
All right. Now what do I do? There is no access to Boraq or similar =
here. If the glazes I am making with Frit, that begin with a G.B. =
--------
Tony Hansen, Digitalfire Corp.
Alisa Clausen on thu 5 jun 03
Dear Ron and Clayart,
I have been reading all the feedback on my questioning the published =
article with either G.B. or Frit 3134 in a glaze recipe.
It is important for me to make myself perfectly clear why I reacted to =
this article. I think, as it can happen, my intent with this question =
on Clayart has taken on some forms that I were not my meaning. On a =
positive note and not about "me", it has opened discussions that are =
very basic to sound glaze development and technical advances. Through a =
forum like ours, the word gets out faster then if was available only in =
books or classrooms. Good work Clayart.
When I read this article, my very first reaction was "what is that??"" =
How can that be? After all this talk and intense research to develop a =
sub.for G.B., such as Boraq, etc, how can it be that in print in a =
Ceramic publication, it just says simply either or G.B. or 3134? Many =
people reading these magazines and not Clayart for example, will believe =
this to be true. Why shouldn't they? It says so right there. =
Irresponsible.
The worst of it for me personally is, the people just starting to mix =
their own glazes that may be terribly frustrated and disappointed by =
this sub. and give up way too early in their practical learning. =
Irresponsible.
I started to think of course how I started to sub. for G.B. First with =
Colemantite and later with a Frit. All along these has been discussed on =
Clayart and I know what I was dragging in to the recipe and I know that =
it is not a sub. that passes for a correct chemical sub, mol for mol.
However, the glazes are very similar if not exact or better than the =
G.B. glazes. I have had few glazes fail, as far as appearance or feel =
with the Frit instead in of G.B. Some are looking exactly alike and =
others are not, but have their own good characteristics. All in the =
vein that I know still, this is not an acceptable chemical sub. material =
for material.
All right. Now what do I do? There is no access to Boraq or similar =
here. If the glazes I am making with Frit, that begin with a G.B. =
recipe, prove to be good glazes, isn't it possible to use the glaze =
recipe with the Frit, and note it as a revised recipe? I know that am =
not setting out to make an exact material for material sub. for the G.B. =
recipe, because I acknowledge my hindered tehnical knowledge capacity =
and resources as of today. However, isn't all right to use the recipe =
as a jumping off point, and see what sort of glaze I do get with the =
materials I using? I do not believe that I am either lazy or ignorant. =
I do believe that I am not dedicating my studio work to glaze =
development. This does not mean that I am looking for an easy way out. =
One day I hope to have the resources to develop glazes in a very =
exacting way. Right now I am gathering the information on how to do =
this. Greatly from advise from Ron, Tom, Ivor, glaze calculation =
programs, Digitalfire pages, discussion and not at least, practical =
testing. =20
Now, my question that keeps pestering me. Is there a difference between =
these two working methods?:
Subbing Frit for G.B. on a gram to gram basis and saying, good glaze. =
That is all I need, a good looking glaze. Got it. Either G.B. or Frit, =
no problem. No more thinking.
Or
Subbing Frit for G.B. as above. Saying OK, the glaze looks good. Now =
let us dig deeper than appearances alone and see what is going on here =
with this glaze? All right, big chemical differences in these two =
recipes. Let us learn the materials, effects and either
make a new glaze with the frit or try to make a glaze very similar to =
the G.B. glaze without G.B. Two big challenges right there.
Well, yes, I know the answer to my own question. Sorry for wasting your =
time. I am clearing my own head.
Now, how do I combine practical testing (where the results are good) =
with the knowledge of what I have subbed is not chemically correct for =
that recipe? If my intent was to duplicate the G.B. recipe to a T with =
a sub. so have I greatly failed. I know that. If my short term goal is =
to see if the glaze with G.B. can be revised with a frit and the result =
is a glaze with good appearance, I have not failed. Now I have to go =
further and learn more about what I have done and what I want to =
achieve.
I think the learning curve is very steep. Practical experience is =
theory's best partner. =20
I take with me the last words of Ron's intellegent words,=20
As in most things some sort of balance is the better way.
best regards,=20
from Alisa in Denmark
many glaze tests to fire this weekend!
Mert & Holly Kilpatrick on sat 7 jun 03
Tony,
You have mentioned Ulexite several times recently, and it is referenced on
your Gerstley Borate site. Can you recommend a supplier for it? I had
gotten a small sample from, I think, Axner's, but it was not listed on their
website last time I checked, and I was unable to find it listed by other
suppliers.
Thanks,
Holly
----- Original Message -----
From:
> I agree. I suppose if a glaze contains a small amount
> of GB a read-and-believe approach could work.
> As I noted, I am sure you do have access to Turkish
> Ulexite, it is shipped around the world. Check B2O3.com
> out of the UK. I was in Turkey with Peter Cave, he runs
> this site. I\'ll bet he knows where to get it in Europe.
>
> Send me your glaze and I will show you how to substitute
> using Ulexite.
Ababi on sat 7 jun 03
Tony offered me to buy Ulexite.
Remembering your words in ClayArt - Tony - that it melts like water in 600C. ( Or so)
I tried to convince the suppliers to import it as Turkey is so near to Israel.
Also sent some E mails to some companies might use it according to Tony's
explanations.
In my polite island you get replay only if you want to buy several tons.
Through a Turkish potter I found the mines or company. They did not understand
English, at least when I called.
I know they have an agent in Luxembourg- ( With the Help of Mark, a UK Clayarter)
Arriving to that point I decided to stick to what I have. I think following my letters Wally
tried with a help of a Turkish potter to try to find and test Ulexite. I send this letter to
Wally too, perhaps you can tell us if you have succeeded.
Since I am not rakuing anymore and even if I would I found locally sold frits with more
than 35% B2O3 and I gave up.
....Still the glaze addict in me want to test this mineral!
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.israel-ceramics.org/membersGallery/personalpage.asp?MID=507
at the time reading your word Tony in Insight , I have thought, in the case of raku, that
this material though is too soft might create "melting spots" in a normal glaze could
be a disastrous but in raku where you look for the disastrous result- could be just
great!
---------- Original Message ----------
>Tony,
>You have mentioned Ulexite several times recently, and it is referenced on
>your Gerstley Borate site. Can you recommend a supplier for it? I had
>gotten a small sample from, I think, Axner's, but it was not listed on their
>website last time I checked, and I was unable to find it listed by other
>suppliers.
>Thanks,
>Holly
>----- Original Message -----
>From:
>> I agree. I suppose if a glaze contains a small amount
>> of GB a read-and-believe approach could work.
>> As I noted, I am sure you do have access to Turkish
>> Ulexite, it is shipped around the world. Check B2O3.com
>> out of the UK. I was in Turkey with Peter Cave, he runs
>> this site. I\'ll bet he knows where to get it in Europe.
>>
>> Send me your glaze and I will show you how to substitute
>> using Ulexite.
tony@DIGITALFIRE.AB.CA on sun 8 jun 03
Plainsman Clays as a couple of hundred bags in stock.
You can call them at 403-527-8535, ask for Tim.
I will be making a web page so you can buy it online,
should have it set up in the next couple of weeks.
Will post a message when ready.
-------8<--------
Tony,
You have mentioned Ulexite several times recently, and it is referenced on
your Gerstley Borate site. Can you recommend a supplier for it? I had
gotten a small sample from, I think, Axner\'s, but it was not listed on their
website last time I checked, and I was unable to find it listed by other
suppliers.
Thanks,
Holly
----- Original Message -----
From:
> I agree. I suppose if a glaze contains a small amount
> of GB a read-and-believe approach could work.
> As I noted, I am sure you do have access to Turkish
> Ulexite, it is shipped around the world. Check B2O3.com
> out of the UK. I was in Turkey with Peter Cave, he runs
> this site. I\'ll bet he knows where to get it in Europe.
>
> Send me your glaze and I will show you how to substitute
> using Ulexite.
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--------
Tony Hansen, Digitalfire Corp.
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