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calcium matte glaze

updated fri 1 jun 12

 

Ben Morrison on mon 28 may 12


I'd like some feedback on the formula of this glaze. I pulled it =3D

All,=3D0A=3D0AI'd like some feedback on the formula of this glaze. I pulled=
it =3D
off an unknown website some time ago. =3D0A=3D0AReliable Cone 6 Calcium Mat=
te=3D
=3D0A=3D0A=3D0AWollastonite =3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA034=
.0=3D0AFerro Frit 3134 =3DA0=3D
=3DA0=3DA0=3DA021.0=3D0AKaolin=3D0A=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=
=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3D
=3DA0=3DA045.0 =3D0A

Ben Morrison on tue 29 may 12


Thanks for the break down. I was thinking the same thing as Terry=3D

Ron,=3D0A=3D0AThanks for the break down. I was thinking the same thing as T=
erry=3D
here. It looks like a soft alumina matte, not calcium matte at all. The re=
=3D
ason I posted it and asked is because I'm broke at the moment and out of si=
=3D
lica, with a couple orders to get out. I picked though my lists of recipes =
=3D
trying to find some that looked interesting that didn't call for silica dir=
=3D
ectly, but instead called for frits that I have in stock. I figured if it l=
=3D
ooked at all usable to you guys I'd spend some time and do some line blends=
=3D
for color in the next firing. I have yet to stock 3195. I have been trying=
=3D
to get through the bags of 3134, and 3124, before trying to nail down the =
=3D
elusive calcium matte in the Mastering Cone 6 book.=3D0A=3D0A-Ben=3D0A=3D0A=
=3D0A=3D0A__=3D
______________________________=3D0A From: "ronroy@ca.inter.net" in=3D
ter.net>=3D0ATo: Ben Morrison =3D0ACc: Clayart@LSV.CE=
RAMI=3D
CS.ORG =3D0ASent: Tuesday, May 29, 2012 7:34 PM=3D0ASubject: Re: Calcium Ma=
tte =3D
Glaze=3D0A =3D0AHi Ben,=3D0A=3D0ANeither is going to be a stable glaze I do=
n't thin=3D
k - way low in silica - expansion is a bit high and I thought you could do =
=3D
better with more CaO so I tried frit 3195.=3D0A=3D0ACaO is up and expansion=
is =3D
down - I would bet it is a better glaze of this type.=3D0A=3D0AI don't like=
gla=3D
zes with so few materials - get a change in one of them and the glaze will =
=3D
can change a lot=3D0A=3D0AWollastonite................=3DA0 =3DA0 38.50=3D0=
A=3DA0 EPK..=3D
.......................=3DA0 =3DA0 37.50=3D0A=3DA0 F3195...................=
....=3DA0 =3D
=3DA0 24.00=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0=
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3D3D=3D
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3D
=3DA0 =3DA0 =3DA0 =3DA0 100.00=3D0A=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 CaO=
=3DA0 =3DA0 =3DA0 0.89*=3DA0 =3D
<<<< was 0.86=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 MgO=3DA0 =3DA0 =3DA0 0.04*=
=3D0A=3DA0 =3DA0 =3DA0 =3DA0=3D
=3DA0 K2O=3DA0 =3DA0 =3DA0 0.00*=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Na2O=
=3DA0 =3DA0 =3DA0 0.07*=3D0A=3D
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Fe2O3=3DA0 =3DA0 0.01=3D0A=3DA0 =3DA0 =3DA0 =
=3DA0 =3DA0 TiO2=3DA0 =3DA0 =3D
=3DA0 0.00=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 B2O3=3DA0 =3DA0 =3DA0 0.21=3D0=
A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 A=3D
l2O3=3DA0 =3DA0 0.45=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 SiO2=3DA0 =3DA0 =3D=
A0 2.13=3D0A=3DA0 =3DA0 =3DA0 =3D
=3DA0 =3DA0 P2O5=3DA0 =3DA0 =3DA0 0.00=3D0A=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3D=
A0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3D
=3DA0 Si:Al:=3DA0 =3DA0 4.70 << was 4.68=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0=
=3DA0 =3DA0 =3DA0 =3DA0 =3D
=3DA0 =3DA0 SiB:Al:=3DA0 =3DA0 5.17=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Ther=
mal Expansion:=3DA0 42=3D
8.19 << was 464.59=3D0A=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Formula We=
ight:=3DA0 246.59=3D
=3D0A=3D0A=3D0AQuoting Ben Morrison :=3D0A=3D0A> I'd l=
ike some f=3D
eedback on the formula of this glaze. I pulled it=3D0A> All,=3D0A> =3D0A> I=
'd lik=3D
e some feedback on the formula of this glaze. I pulled it off an unknown we=
=3D
bsite some time ago.=3D0A> =3D0A> Reliable Cone 6 Calcium Matte=3D0A> =3D0A=
> =3D0A> W=3D
ollastonite =3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA034.0=3D0A> Ferro F=
rit 3134 =3DA0=3DA0=3DA0=3D
=3DA021.0=3D0A> Kaolin=3D0A> =3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=
=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3D
=3DA045.0=3D0A> =3D0A>

ronroy@CA.INTER.NET on tue 29 may 12


Hi Ben,

Neither is going to be a stable glaze I don't think - way low in =3D20
silica - expansion is a bit high and I thought you could do better =3D20
with more CaO so I tried frit 3195.

CaO is up and expansion is down - I would bet it is a better glaze of =3D20
this type.

I don't like glazes with so few materials - get a change in one of =3D20
them and the glaze will can change a lot

Wollastonite................ 38.50
EPK......................... 37.50
F3195....................... 24.00
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3=
D
100.00

CaO 0.89* <<<< was 0.86
MgO 0.04*
K2O 0.00*
Na2O 0.07*
Fe2O3 0.01
TiO2 0.00
B2O3 0.21
Al2O3 0.45
SiO2 2.13
P2O5 0.00

Si:Al: 4.70 << was 4.68
SiB:Al: 5.17
Thermal Expansion: 428.19 << was 464.59
Formula Weight: 246.59


Quoting Ben Morrison :

> I'd like some feedback on the formula of this glaze. I pulled it
> All,
>
> I'd like some feedback on the formula of this glaze. I pulled it off =3D2=
0
> an unknown website some time ago.
>
> Reliable Cone 6 Calcium Matte
>
>
> Wollastonite =3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA034.0
> Ferro Frit 3134 =3DA0=3DA0=3DA0=3DA021.0
> Kaolin
> =3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3D=
A0=3DA0=3DA0=3DA045.0
>
>

Ben Morrison on wed 30 may 12


I'll put the original through the next load and let you know. I'l=3D

Ron,=3D0A=3D0AI'll put the original through the next load and let you know.=
I'l=3D
l have to buy some 3195 to do the better glaze. Thanks for the help!=3D0A=
=3D0A-=3D
Ben=3D0A=3D0A=3D0A=3D0A________________________________=3D0A From: "ronroy@=
ca.inter.n=3D
et" =3D0ATo: Ben Morrison =3D0AC=
c: "=3D
Clayart@LSV.CERAMICS.ORG" =3D0ASent: Wednesday, =
Ma=3D
y 30, 2012 12:52 PM=3D0ASubject: Re: Calcium Matte Glaze=3D0A =3D0AHi Ben,=
=3D0A=3D0AI=3D
nteresting that the high calcium mattes in our book are stable - way over a=
=3D
ny of the limits. I would like to know if the glaze I sent you or the origi=
=3D
nal is stable as well - let me know when you have something I can send to t=
=3D
he lab up here.=3D0A=3D0ARR=3D0A=3D0A=3D0AQuoting Ben Morrison ahoo.com>:=3D
=3D0A=3D0A> Ron,=3D0A> =3D0A> Thanks for the break down. I was thinking the=
same th=3D
ing as Terry here. It looks like a soft alumina matte, not calcium matte at=
=3D
all. The reason I posted it and asked is because I'm broke at the moment a=
=3D
nd out of silica, with a couple orders to get out. I picked though my lists=
=3D
of recipes trying to find some that looked interesting that didn't call fo=
=3D
r silica directly, but instead called for frits that I have in stock. I fig=
=3D
ured if it looked at all usable to you guys I'd spend some time and do some=
=3D
line blends for color in the next firing. I have yet to stock 3195. I have=
=3D
been trying to get through the bags of 3134, and 3124, before trying to na=
=3D
il down the elusive calcium matte in the Mastering Cone 6 book.=3D0A> =3D0A=
> -B=3D
en=3D0A> =3D0A> =3D0A> =3D0A> ________________________________=3D0A>=3DA0 F=
rom: "ronroy=3D
@ca.inter.net" =3D0A> To: Ben Morrison o.=3D
com>=3D0A> Cc: Clayart@LSV.CERAMICS.ORG=3D0A> Sent: Tuesday, May 29, 2012 7=
:34 =3D
PM=3D0A> Subject: Re: Calcium Matte Glaze=3D0A> =3D0A> Hi Ben,=3D0A> =3D0A>=
Neither i=3D
s going to be a stable glaze I don't think - way low in silica - expansion =
=3D
is a bit high and I thought you could do better with more CaO so I tried fr=
=3D
it 3195.=3D0A> =3D0A> CaO is up and expansion is down - I would bet it is a=
bet=3D
ter glaze of this type.=3D0A> =3D0A> I don't like glazes with so few materi=
als =3D
- get a change in one of them and the glaze will can change a lot=3D0A> =3D=
0A> =3D
Wollastonite................=3DA0 =3DA0 38.50=3D0A> =3DA0 EPK..............=
........=3D
...=3DA0 =3DA0 37.50=3D0A> =3DA0 F3195.......................=3DA0 =3DA0 24=
.00=3D0A> =3DA0 =3D
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3D=
A0 =3DA0 =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D
=3D3D=3D3D=3D3D=3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0=
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3D
=3DA0=3DA0 100.00=3D0A> =3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 CaO=3DA0 =3DA0=
=3DA0=3DA0 0.89*=3DA0=3DA0 <<=3D
<< was 0.86=3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 MgO=3DA0 =3DA0 =3DA0=3DA0 0=
.04*=3D0A> =3DA0 =3DA0 =3DA0=3D
=3DA0 =3DA0 K2O=3DA0 =3DA0 =3DA0=3DA0 0.00*=3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =
=3DA0 Na2O=3DA0 =3DA0 =3DA0 0.=3D
07*=3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Fe2O3=3DA0 =3DA0=3DA0 0.01=3D0A> =
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Ti=3D
O2=3DA0 =3DA0 =3DA0 0.00=3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 B2O3=3DA0 =3DA=
0 =3DA0 0.21=3D0A> =3DA0 =3DA0=3D
=3DA0 =3DA0 =3DA0 Al2O3=3DA0 =3DA0=3DA0 0.45=3D0A> =3DA0 =3DA0 =3DA0 =3DA0=
=3DA0 SiO2=3DA0 =3DA0 =3DA0 2=3D
.13=3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 P2O5=3DA0 =3DA0 =3DA0 0.00=3D0A> =
=3D0A> =3DA0 =3DA0 =3DA0 =3DA0 =3D
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0=3DA0 Si:Al:=3DA0 =3DA0 4.70 << wa=
s 4.68=3D0A> =3DA0 =3DA0 =3D
=3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 SiB:Al:=3DA0 =3DA0 5.=
17=3D0A> =3DA0 =3DA0 =3DA0 =3DA0=3D
=3DA0=3DA0 Thermal Expansion:=3DA0 428.19 << was 464.59=3D0A> =3DA0 =3DA0 =
=3DA0 =3DA0 =3DA0 =3D
=3DA0 =3DA0 Formula Weight:=3DA0 246.59=3D0A> =3D0A> =3D0A> Quoting Ben Mor=
rison rpdx@YAHOO.COM>:=3D0A> =3D0A>> I'd like some feedback on the formula of thi=
s gl=3D
aze. I pulled it=3D0A>> All,=3D0A>> =3D0A>> I'd like some feedback on the f=
ormula=3D
of this glaze. I pulled it off an unknown website some time ago.=3D0A>> =
=3D0A>=3D
> Reliable Cone 6 Calcium Matte=3D0A>> =3D0A>> =3D0A>> Wollastonite =3DA0=
=3DA0=3DA0=3DA0=3D
=3DA0=3DA0=3DA0=3DA0=3DA034.0=3D0A>> Ferro Frit 3134 =3DA0=3DA0=3DA0=3DA021=
.0=3D0A>> Kaolin=3D0A>> =3D
=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=
=3DA0=3DA0=3DA045.0=3D0A>> =3D0A>>

ronroy@CA.INTER.NET on wed 30 may 12


Hi Ben,

Interesting that the high calcium mattes in our book are stable - way =3D20
over any of the limits. I would like to know if the glaze I sent you =3D20
or the original is stable as well - let me know when you have =3D20
something I can send to the lab up here.

RR


Quoting Ben Morrison :

> Ron,
>
> Thanks for the break down. I was thinking the same thing as Terry =3D20
> here. It looks like a soft alumina matte, not calcium matte at all. =3D20
> The reason I posted it and asked is because I'm broke at the moment =3D20
> and out of silica, with a couple orders to get out. I picked though =3D20
> my lists of recipes trying to find some that looked interesting that =3D2=
0
> didn't call for silica directly, but instead called for frits that I =3D2=
0
> have in stock. I figured if it looked at all usable to you guys I'd =3D20
> spend some time and do some line blends for color in the next =3D20
> firing. I have yet to stock 3195. I have been trying to get through =3D20
> the bags of 3134, and 3124, before trying to nail down the elusive =3D20
> calcium matte in the Mastering Cone 6 book.
>
> -Ben
>
>
>
> ________________________________
> From: "ronroy@ca.inter.net"
> To: Ben Morrison
> Cc: Clayart@LSV.CERAMICS.ORG
> Sent: Tuesday, May 29, 2012 7:34 PM
> Subject: Re: Calcium Matte Glaze
>
> Hi Ben,
>
> Neither is going to be a stable glaze I don't think - way low in =3D20
> silica - expansion is a bit high and I thought you could do better =3D20
> with more CaO so I tried frit 3195.
>
> CaO is up and expansion is down - I would bet it is a better glaze =3D20
> of this type.
>
> I don't like glazes with so few materials - get a change in one of =3D20
> them and the glaze will can change a lot
>
> Wollastonite................=3DA0 =3DA0 38.50
> =3DA0 EPK.........................=3DA0 =3DA0 37.50
> =3DA0 F3195.......................=3DA0 =3DA0 24.00
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =
=3DA0 =3DA0 =3DA0 =3D3D=3D3D=3D3D=3D3D=3D
=3D3D=3D3D=3D3D=3D3D=3D3D
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =
=3DA0 =3DA0 =3DA0 =3DA0 100.00
>
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 CaO=3DA0 =3DA0 =3DA0 0.89*=3DA0 <<<< was =
0.86
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 MgO=3DA0 =3DA0 =3DA0 0.04*
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 K2O=3DA0 =3DA0 =3DA0 0.00*
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Na2O=3DA0 =3DA0 =3DA0 0.07*
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Fe2O3=3DA0 =3DA0 0.01
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 TiO2=3DA0 =3DA0 =3DA0 0.00
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 B2O3=3DA0 =3DA0 =3DA0 0.21
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Al2O3=3DA0 =3DA0 0.45
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 SiO2=3DA0 =3DA0 =3DA0 2.13
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 P2O5=3DA0 =3DA0 =3DA0 0.00
>
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Si:Al:=
=3DA0 =3DA0 4.70 << was =3D
4.68
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 SiB:Al:=
=3DA0 =3DA0 5.17
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Thermal Expansion:=3DA0 428.19 << was 464.=
59
> =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 Formula Weight:=3DA0 246.59
>
>
> Quoting Ben Morrison :
>
>> I'd like some feedback on the formula of this glaze. I pulled it
>> All,
>>
>> I'd like some feedback on the formula of this glaze. I pulled it =3D20
>> off an unknown website some time ago.
>>
>> Reliable Cone 6 Calcium Matte
>>
>>
>> Wollastonite =3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA034.0
>> Ferro Frit 3134 =3DA0=3DA0=3DA0=3DA021.0
>> Kaolin
>> =3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=
=3DA0=3DA0=3DA0=3DA045.0
>>
>>

ivor and olive lewis on thu 31 may 12


Dear Ben,
Wollastonite is a great source for Calcium Oxide. But I would have doubts
about this batch maturing below Cone 8..It might need cone 10 to get the
refractories to dissolve and slow cooling to precipitate the crystals that
would develop the matt surface and opacity.

Wollastonite 34.0

Ferro Frit 3134 21.0

Kaolin 45.0



Regards,

Ivor Lewis,
REDHILL,
South Australia