mel jacobson on tue 22 may 07
most will recommend 1-3 percent.
it all depends:
glaze colorant,
how opaque you want the glaze
.....and, all i wanted was to get
the transparent quality reduced, so i would
say...1 percent.
mel
the behrens glaze was a slider. 10 gerts 90 ash will
make a good cone 10 glaze. 60/40 is a great mid range..cone 4-6.
90 gerts 10 ash will be fine for raku.
so.
you just slide the percentages. i love glazes like that.
great learning tools.
if the glaze is runny, add more ash.
from: mel/minnetonka.mn.usa
website: http://www.visi.com/~melpots/
Clayart page link: http://www.visi.com/~melpots/clayart.html
Paul Lewing on mon 26 dec 11
I have a cone 10 glaze that uses 10 percent tin oxide as an optifier.
Due to the rising price of tin oxide I'd like to switch to zircopax.
Is zircopax a 1 to 1 sub for tin. Will zircopax react the same in the
glaze as the tin?? I plan to run some tests but would like a little
heads up if anyone has made this sub.
That's a LOT of tin! You may find that if you substitute enough
zircopax to get an equivalent amount of opacifying, you will notice
other differences. The two have markedly different color responses
with certain coloring oxides. One way you might deal with the rising
cost of tin is to see how much of that tin you could lose and still
get the same result.
Paul Lewing
www.paullewingtile.com
www.paullewingart.com
Johanna San Inocencio on mon 26 dec 11
I love how Clayart always seems to touch on what I am working on. I have =
=3D
a related question, can I use both zircopax and titanium dioxide in a =3D
glaze to balance the harsh white of zircopax and the warm white of =3D
titanium dioxide?
Johanna
On Dec 26, 2011, at 8:41 PM, Steve Slatin wrote:
> No, closer to two to one really, but it will opacify, and the glazes =3D
will be brighter and less warm. I
> find surface textures are also different.
>=3D20
> Steve Slatin --=3D20
>=3D20
>=3D20
> N48.0886450
> W123.1420482
>=3D20
>=3D20
> ________________________________
>=3D20
> I have a cone 10 glaze that uses 10 percent tin oxide as an optifier. =3D
Due to the rising price of tin oxide I'd like to switch to zircopax. Is =3D
zircopax a 1 to 1 sub for tin. Will zircopax react the same in the glaze =
=3D
as the tin?? I plan to run some tests but would like a little heads up =3D
if anyone has made this sub.
>=3D20
> Thanks!! =3D20
> Gene
> mudduck@mudduckpottery.net
> www.mudduckpottery.net
mudduck on mon 26 dec 11
I have a cone 10 glaze that uses 10 percent tin oxide as an optifier. =3D
Due to the rising price of tin oxide I'd like to switch to zircopax. Is =3D
zircopax a 1 to 1 sub for tin. Will zircopax react the same in the glaze =
=3D
as the tin?? I plan to run some tests but would like a little heads up =3D
if anyone has made this sub.
Thanks!! =3D20
Gene
mudduck@mudduckpottery.net
www.mudduckpottery.net
Edouard Bastarache on mon 26 dec 11
2 zirconium silicate for 1 tin oxide
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
----- Original Message -----
From: "mudduck"
To:
Sent: Monday, December 26, 2011 5:06 PM
Subject: zircopax
I have a cone 10 glaze that uses 10 percent tin oxide as an optifier. Due t=
o
the rising price of tin oxide I'd like to switch to zircopax. Is zircopax a
1 to 1 sub for tin. Will zircopax react the same in the glaze as the tin?? =
I
plan to run some tests but would like a little heads up if anyone has made
this sub.
Thanks!!
Gene
mudduck@mudduckpottery.net
www.mudduckpottery.net
William & Susan Schran User on mon 26 dec 11
On 12/26/11 5:06 PM, "mudduck" wrote:
> I have a cone 10 glaze that uses 10 percent tin oxide as an optifier. Due=
to
> the rising price of tin oxide I'd like to switch to zircopax. Is zircopax=
a 1
> to 1 sub for tin. Will zircopax react the same in the glaze as the tin??
Here's the Digitalfire web site information on tin and zircopax:
http://digitalfire.com/4sight/material/tin_oxide_1642.html
http://digitalfire.com/4sight/material/zircopax_1724.html
Essentially you need twice as much zircopax to accomplish the same results
as with tin. This will stiffen the glaze, so some change in the glaze may
result.
Bill
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Steve Slatin on mon 26 dec 11
No, closer to two to one=3DA0really, but it will opacify, and the glazes wi=
ll=3D
be brighter and less warm.=3DA0 I=3D0Afind surface textures are also diffe=
rent=3D
.=3D0A=3D0ASteve Slatin -- =3D0A=3D0A=3D0AN48.0886450=3D0AW123.1420482=3D0A=
=3D0A=3D0A________=3D
________________________=3D0A=3D0AI have a cone 10 glaze that uses 10 perce=
nt t=3D
in oxide as an optifier. Due to the rising price of tin oxide I'd like to s=
=3D
witch to zircopax. Is zircopax a 1 to 1 sub for tin. Will zircopax react th=
=3D
e same in the glaze as the tin?? I plan to run some tests but would like a =
=3D
little heads up if anyone has made this sub.=3D0A=3D0AThanks!!=3DA0 =3D0AGe=
ne=3D0Amud=3D
duck@mudduckpottery.net=3D0Awww.mudduckpottery.net
Bonnie Staffel on tue 27 dec 11
Gene, I made the substitute of zircopax for tin oxide, at first I did 2 - 1
z-t but then reduced the zircopax to 1 - 1. Actually I feel it depends upon
the glaze. I did this so long ago that I have forgotten my tests, long gone
in many moves. I just know it works. I also learned that it was in short
supply a few years ago so purchased a couple of bags.
There are some good things about using zircopax as a tin opacified glaze
will react to chrome colorants blushing the tin glaze with pink.
My advice is to test your glaze to make sure you like the finish. Tin
imparts a different surface look to the glaze. I tried Opax years ago and
discarded it as too "dead" in my glaze. Tin and zircopax seem to allow some
subtle depth to the glazes in my bases.
Bonnie
http://webpages.charter.net/bstaffel/
http://vasefinder.com/bstaffelgallery1.html
DVD Throwing with Coils and Slabs
DVD Introduction to Wheel Work
Charter Member Potters Council
Edouard Bastarache on tue 27 dec 11
Over the years I have observed that a glaze opacified solely with Titanium
Dioxide has the tendancy to mar where you put your fingers manipulating the
pot.
For that matter, whenever possible, I used light Rutile.
I use 2 grades of Titanium Dioxide, Tr92 which is zirconium
coated ( zirconium sulfate is added at the beginning of the process) and
considered the best stuff for ceramics according to 1of the chemists of the
maker, and AHR-Tam sold in 2,000 pound bags
sold to TAM near or in Buffalo..
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
----- Original Message -----
From: "Johanna San Inocencio"
To:
Sent: Monday, December 26, 2011 11:19 PM
Subject: Re: zircopax
I love how Clayart always seems to touch on what I am working on. I have a
related question, can I use both zircopax and titanium dioxide in a glaze t=
o
balance the harsh white of zircopax and the warm white of titanium dioxide?
Johanna
On Dec 26, 2011, at 8:41 PM, Steve Slatin wrote:
> No, closer to two to one really, but it will opacify, and the glazes will
> be brighter and less warm. I
> find surface textures are also different.
>
> Steve Slatin --
>
>
> N48.0886450
> W123.1420482
>
>
> ________________________________
>
> I have a cone 10 glaze that uses 10 percent tin oxide as an optifier. Due
> to the rising price of tin oxide I'd like to switch to zircopax. Is
> zircopax a 1 to 1 sub for tin. Will zircopax react the same in the glaze
> as the tin?? I plan to run some tests but would like a little heads up if
> anyone has made this sub.
>
> Thanks!!
> Gene
> mudduck@mudduckpottery.net
> www.mudduckpottery.net
Steve Mills on thu 29 dec 11
When I used to work with Earthenware opaque glazes, I occasionally used Zir=
c=3D
onium Silicate as a sub for Tin but found it too "cold" for my taste unless=
I=3D
reduced the quantity to allow the warmth of the clay colour to soften its =
i=3D
mpact.=3D20
Reading the posts on this, it occurred to me that perhaps a small amount of=
T=3D
itanium (which for me makes a creamy white) added to the Zirconium might wa=
r=3D
m that up enough to suit.=3D20
Just a thought!
Steve M
Steve Mills
Bath
UK
Sent from my iPod
On 27 Dec 2011, at 13:39, Bonnie Staffel wrote:
> Gene, I made the substitute of zircopax for tin oxide, at first I did 2 -=
1=3D
> z-t but then reduced the zircopax to 1 - 1. Actually I feel it depends up=
o=3D
n
> the glaze. I did this so long ago that I have forgotten my tests, long go=
n=3D
e
> in many moves. I just know it works. I also learned that it was in short
> supply a few years ago so purchased a couple of bags.
>=3D20
> There are some good things about using zircopax as a tin opacified glaze
> will react to chrome colorants blushing the tin glaze with pink.
>=3D20
> My advice is to test your glaze to make sure you like the finish. Tin
> imparts a different surface look to the glaze. I tried Opax years ago and
> discarded it as too "dead" in my glaze. Tin and zircopax seem to allow so=
m=3D
e
> subtle depth to the glazes in my bases.
>=3D20
> Bonnie
>=3D20
>=3D20
>=3D20
> http://webpages.charter.net/bstaffel/
> http://vasefinder.com/bstaffelgallery1.html
> DVD Throwing with Coils and Slabs
> DVD Introduction to Wheel Work
> Charter Member Potters Council
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