Paul Kaye on wed 20 sep 00
Does anyone know of the base recipes for making your own cones in the 05 to
02 range.I am thinking of taking my clay body (red earthenware) and fluxing
it with ground glass (after all has been ball milled). I only use one cone
-03- and am starting to feel silly buying them. I have heard that there is
info in the book by Michael Cardew but I do not have access to it. Any help
is welcome.
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Share information about yourself, create your own public profile at
http://profiles.msn.com.
June Perry on wed 20 sep 00
Dear Paul:
I don't know how valid these are in today's world, but here's a couple of
cone recipes from an 1895 book called "The Chemistry of Pottery".
Cone 05 (Estimated tempererature 1055 Celsius)
0.3 K2O 0.2Fe2O3 3.75 SiO2
0.7 Cao 0.3Al2O3 0.25 B2O3
Cone 04 (Estimated temperature 1074 Celsius)
0.3 K2O 0.2Fe2O3 3.80 SiO2
0.7 Cao 0.3 Al2O3 0.20 B2O3
Cone 03 (Estimated temperature 1093 Celsius)
0.3 K2O 0.2 Fe2O3 3.85 SiO2
0.7 Cao 0.3 Al2O3 0.15 B2O3
If you go ahead with these, please let the list know the results.
Regards,
June
Joseph Herbert on fri 22 sep 00
The 1946 edition of Lange's Handbook of Chemistry (often available at used
book stores for not too much money) has a ceramics section. Nowadays, the
kind on information that is in there is too "applied" to make it into modern
chemistry handbooks. One of the tidbits that are in that book is a table of
ceramic cone compositions. The oxide weight percents for each cone are
shown. If one applies glaze calculations to the weight formulae, a recipe
for any particular cone is possible. The easiest, and a favorite of mine,
is cone 33 - 100% Alumina.
If you inspect the table, you will notice there are some ranges of cone
numbers where the amount of a component, like silica, is directly related to
the cone number and increases in a regular way with cone number. If you
have always where those numbers came from, this could give you some insight.
Joseph Herbert
Smart on fri 22 sep 00
Hi, Paul,
I have found a recipe for Orton cone 03 :
K2O =3D 0=2E215
Na2O =3D 0=2E097
CaO =3D 0=2E582
MgO =3D 0=2E106
Al2O3 =3D 0=2E636
SiO2 =3D 5=2E469
B2O3 =3D 0=2E192
Components to use are a frit (based on Na2O, MgO, Al2O3, SiO2, B2O3),
Kaolin, Feldspar, Quartz, Whiting=2E=2E=2E
Here we have different materials, I can't indicate what you may use to make
the recipe=2E
I hope to help you=2E=2E=2E=2E
Cordialement, Smart
Smart=2EConseil
Le site Fran=E7ais d=E9di=E9 aux passionn=E9s de c=E9ramique
The French site dedicated to ceramics lovers
smart2000@wanadoo=2Efr
http://perso=2Ewanadoo=2Efr/smart2000/
----- Original Message -----
From: Paul Kaye
To:
Sent: Wednesday, September 20, 2000 7:11 AM
Subject: cone recipes
> Does anyone know of the base recipes for making your own cones in the 05
to
> 02 range=2EI am thinking of taking my clay body (red earthenware) and
fluxing
> it with ground glass (after all has been ball milled)=2E I only use one co=
ne
> -03- and am starting to feel silly buying them=2E I have heard that there =
is
> info in the book by Michael Cardew but I do not have access to it=2E Any
help
> is welcome=2E
> _________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www=2Ehotmail=2Ec=
om=2E
>
> Share information about yourself, create your own public profile at
> http://profiles=2Emsn=2Ecom=2E
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv=2Eceramics=2Eorg
>
> You may look at the archives for the list or change your subscription
> settings from http://www=2Eceramics=2Eorg/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink=2Ecom=2E
iandol on sat 23 sep 00
If you are in a position where it is impossible to purchase a reasonable =
supply of Standard Cones then I suppose making them for your selves is =
the only option.
Harry Davis provides the technique in The Potter=92s Alternative, though =
his instructions are for test pieces not for cones.
The range of Seger unity values for Cone 022 to cone 12 are given in =
Handbook for Australian Potters, Appendix 3. DeBoos, Harrison and Smith.
Do not expect to achieve the consistency of the product supplied via =
industrial manufacture.
All the best to those who wish to do this.
Ivor Lewis.
| |
|
