Antoinette Badenhorst on wed 8 sep 04
Dear clayarters, I bought dolowhite before from Laguna. Without
realizing there is a difference in the material itself, I recently
bought dolomite, bagged from a company in Ohio. The last one is less
white and less fluffy. Is the one just an impure version of the other or
is there a serious analysis difference that might affect my glazes? The
technician at Laguna told me he is 95% sure I can use the one in place
of the other.
Thanks.
Antoinette Badenhorst
105 Westwood Circle
Saltillo MS
38866
662 869 1651
www.clayandcanvas.com
Scott Paulding on wed 8 sep 04
I've experienced the same thing. I've seen dolomite that reminded me of corn
starch (bright white, very fine feeling), and dolomite that looks like EPK
(slightly yellowish, more clumpy).
Unfortunately, I don't know what the difrence is, but I've always stuck to one
or the other in mixing a glaze (meaning I don't combine them), but there
doesn't seem to be a diffrent yet that I can see.
-scott
--- Antoinette Badenhorst wrote:
> Dear clayarters, I bought dolowhite before from Laguna. Without
> realizing there is a difference in the material itself, I recently
> bought dolomite, bagged from a company in Ohio. The last one is less
> white and less fluffy. Is the one just an impure version of the other or
> is there a serious analysis difference that might affect my glazes? The
> technician at Laguna told me he is 95% sure I can use the one in place
> of the other.
> Thanks.
> Antoinette Badenhorst
> 105 Westwood Circle
> Saltillo MS
> 38866
> 662 869 1651
> www.clayandcanvas.com
>
>
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> melpots@pclink.com.
>
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Ron Roy on thu 9 sep 04
Get an analysis for each one and compare - then you will be much more able
to answer the question.
Be glad to make the comparison for you - I need the two analysis and a
recipe of a glaze to calculate it out.
RR
>Dear clayarters, I bought dolowhite before from Laguna. Without
>realizing there is a difference in the material itself, I recently
>bought dolomite, bagged from a company in Ohio. The last one is less
>white and less fluffy. Is the one just an impure version of the other or
>is there a serious analysis difference that might affect my glazes? The
>technician at Laguna told me he is 95% sure I can use the one in place
>of the other.
>Thanks.
>Antoinette Badenhorst
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Louis Katz on thu 9 sep 04
You can probably use either. But, Dolomite and Whiting both have large
variations in composition. The amount on Mg in them varies greatly. It
could effect your glazes if the two are very different. I would run
tests before glazing a large kiln load or important work.
Sometime back I assembled a list of materials that I thought were worth
stockpiling. Unless you are using a precipitated pure form of Whiting,
whiting and Dolomite were high on my list.
Louis
On Wednesday, September 8, 2004, at 04:09 PM, Scott Paulding wrote:
> I've experienced the same thing. I've seen dolomite that reminded me
> of corn
> starch (bright white, very fine feeling), and dolomite that looks like
> EPK
> (slightly yellowish, more clumpy).
>
> Unfortunately, I don't know what the difrence is, but I've always
> stuck to one
> or the other in mixing a glaze (meaning I don't combine them), but
> there
> doesn't seem to be a diffrent yet that I can see.
>
> -scott
>
> --- Antoinette Badenhorst wrote:
>
>> Dear clayarters, I bought dolowhite before from Laguna. Without
>> realizing there is a difference in the material itself, I recently
>> bought dolomite, bagged from a company in Ohio. The last one is less
>> white and less fluffy. Is the one just an impure version of the other
>> or
>> is there a serious analysis difference that might affect my glazes?
>> The
>> technician at Laguna told me he is 95% sure I can use the one in place
>> of the other.
>> Thanks.
>> Antoinette Badenhorst
>> 105 Westwood Circle
>> Saltillo MS
>> 38866
>> 662 869 1651
>> www.clayandcanvas.com
>>
>>
> _______________________________________________________________________
> _______
>> Send postings to clayart@lsv.ceramics.org
>>
>> You may look at the archives for the list or change your subscription
>> settings from http://www.ceramics.org/clayart/
>>
>> Moderator of the list is Mel Jacobson who may be reached at
>> melpots@pclink.com.
>>
>
>
> =====
> "I should have been a plumber."
> -Albert Einstein
>
>
>
> _______________________________
> Do you Yahoo!?
> Win 1 of 4,000 free domain names from Yahoo! Enter now.
> http://promotions.yahoo.com/goldrush
>
> _______________________________________________________________________
> _______
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
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