iandol on tue 19 aug 03
Dear Johanna De Maine,
Do you have the right Potterycraft Number. I have Colmanite 2954, not =
2594. 4112 is not listed on the data sheet.
If this is the case, Brett at the Pug Mill, Adelaide or Walkers in =
Melbourne should be able to oblige you with DA 2954, Calcium =
Borosilicate Frit. Classed as an Insoluble Colmanite substitute.
Unity formula CaO 1.00, Al2O3 0.10, SiO2 2.86, B2O3 1.50.
Mol wt 207.
Best regards,
Ivor Lewis. Redhill, South Australia.
Des & Jan Howard on tue 19 aug 03
Johanna
PotteryCrafts P2954 (repeat - P2954)
% analysis
CaO 27.13
Al2O3 4.78
SiO2 17.7
B2O3 50.39
Ferro 4112
% analysis
CaO 26.25
Al2O3 4.2
SiO2 17.2
B2O3 49.53
Ferro no longer make 4112 (I bought the last bit left on the east coast of Oz)
Don't let anyone con you that Ferro 4106 is a substitute. Not even close.
Des
Johanna De Maine wrote:
> Does anyone have the formula for Ferro frit 4112 which is being used here in
> Australia as a replacement for the colemanite frit from Potterycraft 2594?
--
Des & Jan Howard
Lue Pottery
LUE NSW 2850
Australia
Ph/Fax 02 6373 6419
http://www.luepottery.hwy.com.au
Johanna De Maine on tue 19 aug 03
Does anyone have the formula for Ferro frit 4112 which is being used here in
Australia as a replacement for the colemanite frit from Potterycraft 2594?
Regards
Johanna De Maine
Lawrence Ewing on wed 20 aug 03
Hi Des,
The analysis you gave for Ferro 4112 does not total 100. Is this correct?
Cheers,
Lawrence Ewing
Senior Lecturer
School of Art
Otago Polytechnic
Dunedin
New Zealand
EMAIL: lewing@clear.net.nz
URLS:
Matrix Glaze Software:
http://www.Matrix2000.co.nz
Glaze Chemistry Instruction:
http://www.Matrix2000.co.nz/GlazeTeach/Index.htm
New Zealand Society of Potters website:
http://www.nzPotters.com
----- Original Message -----
From: "Des & Jan Howard"
To:
Sent: Wednesday, August 20, 2003 12:45 AM
Subject: Re: Ferro Frit 4112
> Johanna
> PotteryCrafts P2954 (repeat - P2954)
> % analysis
> CaO 27.13
> Al2O3 4.78
> SiO2 17.7
> B2O3 50.39
>
> Ferro 4112
> % analysis
> CaO 26.25
> Al2O3 4.2
> SiO2 17.2
> B2O3 49.53
>
> Ferro no longer make 4112 (I bought the last bit left on the east coast of
Oz)
> Don't let anyone con you that Ferro 4106 is a substitute. Not even close.
> Des
>
>
> Johanna De Maine wrote:
>
> > Does anyone have the formula for Ferro frit 4112 which is being used
here in
> > Australia as a replacement for the colemanite frit from Potterycraft
2594?
>
> --
>
> Des & Jan Howard
> Lue Pottery
> LUE NSW 2850
> Australia
> Ph/Fax 02 6373 6419
> http://www.luepottery.hwy.com.au
>
>
____________________________________________________________________________
__
> 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.
>
Johanna De Maine on wed 20 aug 03
Thank you Des Howard and Sandy Miller for your help with the analysis of
Ferro frit 4112.
Regards
Johanna De Maine
----- Original Message -----
From: "Des & Jan Howard"
To:
Sent: Tuesday, August 19, 2003 10:45 PM
Subject: Re: Ferro Frit 4112
> Johanna
> PotteryCrafts P2954 (repeat - P2954)
> % analysis
> CaO 27.13
> Al2O3 4.78
> SiO2 17.7
> B2O3 50.39
>
> Ferro 4112
> % analysis
> CaO 26.25
> Al2O3 4.2
> SiO2 17.2
> B2O3 49.53
>
> Ferro no longer make 4112 (I bought the last bit left on the east coast of
Oz)
> Don't let anyone con you that Ferro 4106 is a substitute. Not even close.
> Des
>
>
> Johanna De Maine wrote:
>
> > Does anyone have the formula for Ferro frit 4112 which is being used
here in
> > Australia as a replacement for the colemanite frit from Potterycraft
2594?
>
> --
>
> Des & Jan Howard
> Lue Pottery
> LUE NSW 2850
> Australia
> Ph/Fax 02 6373 6419
> http://www.luepottery.hwy.com.au
>
>
____________________________________________________________________________
__
> 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.
>
Des & Jan Howard on wed 20 aug 03
Lawrence
Oops!
I took the Al2O3 value from the line above.
Should be 7.03
Des
Lawrence Ewing wrote:
> Hi Des,
>
> The analysis you gave for Ferro 4112 does not total 100. Is this correct?
--
Des & Jan Howard
Lue Pottery
LUE NSW 2850
Australia
Ph/Fax 02 6373 6419
http://www.luepottery.hwy.com.au
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