David Hewitt on sun 5 aug 01
I received an e-mail from Lorraine Pierce requesting the following
substitutions which appear in Edouard Bastarache's book - 'Substitutions
for Raw Ceramic Materials'. However my reply was returned as 'Mail
Delivery Failed'.
In the hope that she is a subscriber to Clayart I post this information
to-day.
Hello Lorraine,
Yes, I do have his book and it does include a number of substitutions
for Cornwall Stone as follows:-
For 1% Cornwall Stone use:-
Custer 0.648 0.648 0.625 0.609
Nepheline syenite 0.481 0.486
Whiting 0.044 0.044 0.044 0.043 0.044 0.045
Kaolin 0.129 0.177
Kaolin ( Calcined) 0.122 0.097
Alumina 0.051
Alumina hydrate 0.090
Silica 0.217 0.222 0.297 0.302 0.378 0.377
Custer
Nepheline syenite 0.475
Kona F-4 0.666 0.659 0.662 0.652
Whiting 0.044 0.019 0.020 0.019 0.019
Kaolin 0.072
Kaolin ( Calcined) 0.062
Alumina 0.032
Alumina hydrate 0.070 0.043
Silica 0.440 0.254 0.258 0.290 0.286
Take your choice!!
The e-mail address that I have for EB is the same as you quote. I have
not used it recently so cannot say if he has changed it.
Cheers,
David
In message <000801c11c1a$7e610720$b4d93a40@e6k8x2>, Lorraine Pierce
writes
>Goodmorning David,
>
>I am unable to find a subsitute for cornwall stone in the clayart archives;
>my post to Edouardo Bastarache was returned because of 'unknown host' BUT my
>print outs of other subsitutions tell me you have his book 'Subsitutions for
>Ceramic Raw Materials'. Can you help me? Here cornwall stone is a dollar
>a pound, compared to other feldspars at twenty-six cents or so, making the
>cost of a bag about $55 dollars! I would like to have the advantages without
>the cost, so am turning to you. I will be most grateful if you can take the
>time to research this information and post me. Got my fingers crossed.
>Thank you, Lori Pierce in New Port Richey, Florida, USA
>
>oh yes...the address I used for E.B. was edouardb@sorel-tracy.qc.ca
>
--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Web site http://www.dhpot.demon.co.uk
Tom Buck on sun 5 aug 01
David:
I sicc'd Bamboo Karen onto you for help in colouring a casting
slip. I expect she will contact you. Or she'll get the original poster
(???? to me) to ask you.
But meanwhile, here is how your post re Cornsub showed here. Not
readable by me. Could you fix and resend please?
hope you are well. peace. Tom.
Tom Buck ) tel: 905-389-2339
(westend Lake Ontario, province of Ontario, Canada).
mailing address: 373 East 43rd Street,
Hamilton ON L8T 3E1 Canada
On Sun, 5 Aug 2001, David Hewitt wrote:
> I received an e-mail from Lorraine Pierce requesting the following
> substitutions which appear in Edouard Bastarache's book - 'Substitutions
> for Raw Ceramic Materials'. However my reply was returned as 'Mail
> Delivery Failed'.
> In the hope that she is a subscriber to Clayart I post this information
> to-day.
>
> Hello Lorraine,
>
> Yes, I do have his book and it does include a number of substitutions
> for Cornwall Stone as follows:-
>
> For 1% Cornwall Stone use:-
>
> Custer 0.648 0.648 0.625 0.609
> Nepheline syenite 0.481 0.486
> Whiting 0.044 0.044 0.044 0.043 0.044 0.045
> Kaolin 0.129 0.177
> Kaolin ( Calcined) 0.122 0.097
> Alumina 0.051
> Alumina hydrate 0.090
> Silica 0.217 0.222 0.297 0.302 0.378 0.377
>
> Custer
> Nepheline syenite 0.475
> Kona F-4 0.666 0.659 0.662 0.652
> Whiting 0.044 0.019 0.020 0.019 0.019
> Kaolin 0.072
> Kaolin ( Calcined) 0.062
> Alumina 0.032
> Alumina hydrate 0.070 0.043
> Silica 0.440 0.254 0.258 0.290 0.286
>
> Take your choice!!
>
> The e-mail address that I have for EB is the same as you quote. I have
> not used it recently so cannot say if he has changed it.
>
> Cheers,
> David
>
> In message <000801c11c1a$7e610720$b4d93a40@e6k8x2>, Lorraine Pierce
> writes
> >Goodmorning David,
> >
> >I am unable to find a subsitute for cornwall stone in the clayart archives;
> >my post to Edouardo Bastarache was returned because of 'unknown host' BUT my
> >print outs of other subsitutions tell me you have his book 'Subsitutions for
> >Ceramic Raw Materials'. Can you help me? Here cornwall stone is a dollar
> >a pound, compared to other feldspars at twenty-six cents or so, making the
> >cost of a bag about $55 dollars! I would like to have the advantages without
> >the cost, so am turning to you. I will be most grateful if you can take the
> >time to research this information and post me. Got my fingers crossed.
> >Thank you, Lori Pierce in New Port Richey, Florida, USA
> >
> >oh yes...the address I used for E.B. was edouardb@sorel-tracy.qc.ca
> >
>
> --
> David Hewitt
> David Hewitt Pottery ,
> 7 Fairfield Road, Caerleon, Newport,
> South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
> FAX:- +44 (0) 870 1617274
> Web site http://www.dhpot.demon.co.uk
>
> ______________________________________________________________________________
> 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.
>
David Hewitt on mon 6 aug 01
I am sorry if this confused you. There are 11 alternative substitutions
according to which raw materials you use, hence the 'take your pick'. I
have now numbered the columns and put in a '-' where there is none of
that particular raw material in that alternative. There are four
materials in each alternative recipe. On my computer, and viewing the
copy of my email and your email to Clayart, received in the Clayart
Digest, both posting lined up perfectly. I hope, therefore, that this
comes through clearly to you. Please let me know if it doesn't.
David
For 1% Cornwall Stone use any of these 11 alternatives:-
1 2 3 4 5 6
Custer 0.648 0.648 0.625 0.609 - -
Nepheline syenite - - - - 0.481 0.486
Whiting 0.044 0.044 0.044 0.043 0.044 0.045
Kaolin 0.129 - - - 0.177 -
Kaolin ( Calcined) - 0.122 - - - 0.097
Alumina - - 0.051 - - -
Alumina hydrate - - - 0.090 - -
Silica 0.217 0.222 0.297 0.302 0.378 0.377
7 8 9 10 11
Custer - - - - -
Nepheline syenite 0.475 - - - -
Kona F-4 - 0.666 0.659 0.662 0.652
Whiting 0.044 0.019 0.020 0.019 0.019
Kaolin - 0.072 - - -
Kaolin ( Calcined) - - 0.062 - -
Alumina - - - 0.032 -
Alumina hydrate 0.070 - - - 0.043
Silica 0.440 0.254 0.258 0.290 0.286
In message , Tom Buck writes
>David:
> I sicc'd Bamboo Karen onto you for help in colouring a casting
>slip. I expect she will contact you. Or she'll get the original poster
>(???? to me) to ask you.
> But meanwhile, here is how your post re Cornsub showed here. Not
>readable by me. Could you fix and resend please?
> hope you are well. peace. Tom.
>
>Tom Buck ) tel: 905-389-2339
>(westend Lake Ontario, province of Ontario, Canada).
>mailing address: 373 East 43rd Street,
> Hamilton ON L8T 3E1 Canada
>
>On Sun, 5 Aug 2001, David Hewitt wrote:
>
>> I received an e-mail from Lorraine Pierce requesting the following
>> substitutions which appear in Edouard Bastarache's book - 'Substitutions
>> for Raw Ceramic Materials'. However my reply was returned as 'Mail
>> Delivery Failed'.
>> In the hope that she is a subscriber to Clayart I post this information
>> to-day.
>>
>> Hello Lorraine,
>>
>> Yes, I do have his book and it does include a number of substitutions
>> for Cornwall Stone as follows:-
>>
>> For 1% Cornwall Stone use:-
>>
>> Custer 0.648 0.648 0.625 0.609
>> Nepheline syenite 0.481 0.486
>> Whiting 0.044 0.044 0.044 0.043 0.044 0.045
>> Kaolin 0.129 0.177
>> Kaolin ( Calcined) 0.122 0.097
>> Alumina 0.051
>> Alumina hydrate 0.090
>> Silica 0.217 0.222 0.297 0.302 0.378 0.377
>>
>> Custer
>> Nepheline syenite 0.475
>> Kona F-4 0.666 0.659 0.662 0.652
>> Whiting 0.044 0.019 0.020 0.019 0.019
>> Kaolin 0.072
>> Kaolin ( Calcined) 0.062
>> Alumina 0.032
>> Alumina hydrate 0.070 0.043
>> Silica 0.440 0.254 0.258 0.290 0.286
>>
>> Take your choice!!
>>
>> The e-mail address that I have for EB is the same as you quote. I have
>> not used it recently so cannot say if he has changed it.
>>
>> Cheers,
>> David
>>
>> In message <000801c11c1a$7e610720$b4d93a40@e6k8x2>, Lorraine Pierce
>> writes
>> >Goodmorning David,
>> >
>> >I am unable to find a subsitute for cornwall stone in the clayart archives;
>> >my post to Edouardo Bastarache was returned because of 'unknown host' BUT my
>> >print outs of other subsitutions tell me you have his book 'Subsitutions for
>> >Ceramic Raw Materials'. Can you help me? Here cornwall stone is a dollar
>> >a pound, compared to other feldspars at twenty-six cents or so, making the
>> >cost of a bag about $55 dollars! I would like to have the advantages without
>> >the cost, so am turning to you. I will be most grateful if you can take the
>> >time to research this information and post me. Got my fingers crossed.
>> >Thank you, Lori Pierce in New Port Richey, Florida, USA
>> >
>> >oh yes...the address I used for E.B. was edouardb@sorel-tracy.qc.ca
>> >
>>
>> --
>> David Hewitt
>> David Hewitt Pottery ,
>> 7 Fairfield Road, Caerleon, Newport,
>> South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
>> FAX:- +44 (0) 870 1617274
>> Web site http://www.dhpot.demon.co.uk
>>
>> ______________________________________________________________________________
>> 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.
>>
--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Web site http://www.dhpot.demon.co.uk
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