L. P. Skeen on thu 7 feb 08
Larry, you can use about any glossy base and add 2% copper carb and 1/4 =
- 1/2% cobalt carb to get a nice turquoise color. If you have MC6G, try =
their base and go from there.
L
----- Original Message -----=20
From: Larry Kruzan=20
I need a glossy Turquoise glaze for a special project. Looking for =
food
safe as this will be on the inside of a bowl. Cone 6 to 10, oxidation =
or
reduction.
Larry Kruzan on thu 7 feb 08
Hi All,
I need a glossy Turquoise glaze for a special project. Looking for food
safe as this will be on the inside of a bowl. Cone 6 to 10, oxidation or
reduction. (Please no wood fired) I have looked through most of my books
and have not come up with anything that is close. Everything is a matt or a
faux ash no glossy.
Thanks,
Larry Kruzan
Lost Creek Pottery
www.lostcreekpottery.com
Eva Gallagher on fri 8 feb 08
Hi Larry,
I too needed a turquoise for a special project - all tended to craze as they
were high in Na. So I ended up using a combination of turquoise stains in a
regular base glaze that fit my clay. I usually don't like to use stains as I
find they tend to also opacify and you tend to sort of get a paint coating
look especially in electric. I ended up top spraying a bit here and there
with a dark glossy blue and also a rutile/gerst borate mix to give flashes
of colour variation on top of the turquoise.
Eva Gallagher
Deep River, Ontario
----- Original Message -----
From: "Larry Kruzan"
To:
Sent: Thursday, February 07, 2008 9:31 PM
Subject: Turquoise Glaze search
> Hi All,
>
>
>
> I need a glossy Turquoise glaze for a special project. Looking for food
> safe as this will be on the inside of a bowl. Cone 6 to 10, oxidation or
> reduction. (Please no wood fired) I have looked through most of my books
> and have not come up with anything that is close. Everything is a matt or
> a
> faux ash no glossy.
>
>
>
> Thanks,
>
>
>
> Larry Kruzan
>
> Lost Creek Pottery
>
> www.lostcreekpottery.com
>
> ______________________________________________________________________________
> Clayart members may send postings to: clayart@lsv.ceramics.org
>
> You may look at the archives for the list, post messages, change your
> subscription settings or unsubscribe/leave the list here:
> http://www.acers.org/cic/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots2@visi.com
>
>
John Sankey on fri 8 feb 08
Larry, just go to the Glaze Database
http://sankey.ws/glazedata.html
Search for turquoise and you'll find dozens.
Specifically, pick one of the base glazes, start with copper
carbonate and rutile, then add pinches of cobalt carbonate
depending on how blue you like your turquoise.
John
--
Include 'Byrd' in the subject line of your reply
to get through my spam filter.
Mayssan Shora Farra on fri 8 feb 08
Hello Larry:
One Turqouise I like a lot glossy but runny wiht a lot of variations so it
works great for inside of pots.
Was posted to Clayart by Alisa and credited to Chris Clarke;
35 Forsham feldspar( I use G200)
16 Silica
17 Zinc
12 Ball clay
20 Wollastonite
----------------------
Add
3 CU Carb
2 Rutile
1 Zircopax
I am Glaze challenged so I make them like I cook, I do not have the
formula for this.
Another handicap besides my programmable electric Kiln
Sunny days ahead
Mayssan
http://www.clayvillepottery.com
Steve Slatin on fri 8 feb 08
Mayssan --
This is the calc for it; I used OM-4 for the
ball clay.
Recipe Name: Turquoise (Chris Clarke)
Cone: 6 Color: Turquoise, varie.
Firing: Oxidation Surface: Glossy
Amount Ingredient
35 Feldspar--G-200
20 Wollastonite
17 Zinc Oxide
16 Silica
12 Ball Clay--Old Mine #4
3 Copper Carbonate
2 Rutile
1 Zircopax
106 Total
Unity Oxide
.043 Na2O
.095 K2O
.02 MgO
.36 CaO
.483 ZnO
1.000 Total
.231 Al2O3
.004 Fe2O3
2.183 SiO2
.059 TiO2
9.5 Ratio
72.8 Exp
Comments:
-----------------------------------
Calculations by GlazeMaster(tm)
www.masteringglazes.com
------------------------------------
With programs like GlazeCalc and so on,
no one is handicapped any more. It would
take me hours to drag up all the info and
do a hand calc on a single glaze, it's
just a few minutes with a calc program.
My only note on this is 'runny -- sub EPK?'
I don't believe I ever did a second test, but
just running the number it looks like 6 units
of OM-4 and 6 of EPK would give you
a glossy but probably less runny surface --
if I go back to it, it'd be a good place to
start.
Best wishes - Steve Slatin
Mayssan Shora Farra wrote:
Hello Larry:
One Turqouise I like a lot glossy but runny wiht a lot of variations so it
works great for inside of pots.
Was posted to Clayart by Alisa and credited to Chris Clarke;
35 Forsham feldspar( I use G200)
16 Silica
17 Zinc
12 Ball clay
20 Wollastonite
----------------------
Add
3 CU Carb
2 Rutile
1 Zircopax
Steve Slatin --
History teaches us that there have been but few infringements of personal liberty by the state which have not been justified ...
in the name of righteousness and the public good, and few which
have not been directed ... at politically helpless minorities.
-- Harlan Fiske Stone
---------------------------------
Looking for last minute shopping deals? Find them fast with Yahoo! Search.
Jennifer Boyer on tue 12 feb 08
Here's one that's not glossy, but you could alter it. It's a nice
reliable semi gloss at ^10
Black Mountain Turquoise ^10
F-4(Soda) Feldspar 40
Whiting 10
EPK 10
Talc 20
Flint 20
Cobalt Carb .5
Chrome 1.0
On Feb 7, 2008, at 9:31 PM, Larry Kruzan wrote:
> Hi All,
>
>
>
> I need a glossy Turquoise glaze for a special project. Looking for
> food
> safe as this will be on the inside of a bowl. Cone 6 to 10,
> oxidation or
> reduction. (Please no wood fired) I have looked through most of
> my books
> and have not come up with anything that is close. Everything is a
> matt or a
> faux ash no glossy.
>
>
>
> Thanks,
>
>
>
> Larry Kruzan
>
> Lost Creek Pottery
>
> www.lostcreekpottery.com
>
> ______________________________________________________________________
> ________
> Clayart members may send postings to: clayart@lsv.ceramics.org
>
> You may look at the archives for the list, post messages, change your
> subscription settings or unsubscribe/leave the list here: http://
> www.acers.org/cic/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots2@visi.com
*****************************
Jennifer Boyer
Thistle Hill Pottery
Montpelier, VT
http://thistlehillpottery.com
*****************************
Ron Roy on thu 14 feb 08
Hi Mayssan,
Just in case you are interested - this glaze is not durable and will leach
copper into acidic food - short of silica and alumina. Best not to use it
as a liner on functional ware.
RR
>35 Forsham feldspar( I use G200)
>16 Silica
>17 Zinc
>12 Ball clay
>20 Wollastonite
>----------------------
>Add
>3 CU Carb
>2 Rutile
>1 Zircopax
>Mayssan
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Mayssan Shora Farra on thu 14 feb 08
Thanks Ron:
I normally do not but now I will make sure I don't.
Mayssan,
Who makes mostly disfunctional works in the hills of West Virginia,
waiting to have Richard Aerni become a neighbour.
Sally Guger on sun 17 feb 08
Hi Ron, The turquoise you just posted is a cone 10, could you possibly please give it to us in a cone 6? The following two cone 6 glazes I am testing but haven't fired them yet- I have a feeling the Turq. Matt might not be food safe. Please advise! Thanks in advance. Sally
Turquoise Matt
51.5 Nepheline Syenite
20.9 Strontium Carbonate
7.7 Silica
6.6 Ball Clay--Old Mine #4
3.3 Lithium Carbonate
90 Total
Additives
3.5 Copper Carbonate
4 Bentonite
1 Epsom Salts
Turquoise c/6
35 Feldspar G200)
16 Silica
17 Zinc
12 Ball clay (OM4)
20 Wollastonite
----------------------
Add
3 Copper Carb
2 Rutile
1 Zircopax
Ron Roy wrote: It looks durable - don't breath chrome fumes during a firing.
RR
>Here's one that's not glossy, but you could alter it. It's a nice
>reliable semi gloss at ^10
>
>Black Mountain Turquoise ^10
>
>F-4(Soda) Feldspar 40
>Whiting 10
>EPK 10
>Talc 20
>Flint 20
>
>Cobalt Carb .5
>Chrome 1.0
Live, Give, Love
Beyond All Expectation.
Sally Guger
Lakespur Blue Pottery & Sculpture
Lodi, Wisconsin, USA
http://www.saukpr.k12.wi.us/~gugersa/the_art_teachers.htm
---------------------------------
Looking for last minute shopping deals? Find them fast with Yahoo! Search.
Ron Roy on sun 17 feb 08
It looks durable - don't breath chrome fumes during a firing.
RR
>Here's one that's not glossy, but you could alter it. It's a nice
>reliable semi gloss at ^10
>
>Black Mountain Turquoise ^10
>
>F-4(Soda) Feldspar 40
>Whiting 10
>EPK 10
>Talc 20
>Flint 20
>
>Cobalt Carb .5
>Chrome 1.0
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Sally Guger on tue 19 feb 08
Hi Alisa, Thanks for the advice-I'll try out the glazes- sounds like I should keep them on the outside of functional ware. Sally
Alisa Clausen wrote: >
> Turquoise Matt
>
> 51.5 Nepheline Syenite
>20.9 Strontium Carbonate
>7.7 Silica
>6.6 Ball Clay--Old Mine #4
>3.3 Lithium Carbonate
>
>90 Total
>
>Additives
>3.5 Copper Carbonate
>4 Bentonite
>1 Epsom Salts
>
>
Hi Sally
You need just 10 gr. more of Neph. Sye to get the Turquoise mat to unity.
This is a glaze I use a bit of decoratively. It is bright turquoise, but
has a soft surface and scratches easily.
Another Turquoise I use is an adaptation of a glaze originally heavily
loaded with Barium. The color response with Barium subbed with Strontium
is very good.
Barium Blue ^6
30 Strontium Carb.
65 Neph. Syenite
7 Ball Clay
8 Silica
3 Lithium Carb.
ADD
3 Cu. Carb.
Best regards from Alisa in Denmark
Best regards, Alisa in Denmark
______________________________________________________________________________
Clayart members may send postings to: clayart@lsv.ceramics.org
You may look at the archives for the list, post messages, change your
subscription settings or unsubscribe/leave the list here: http://www.acers.org/cic/clayart/
Moderator of the list is Mel Jacobson who may be reached at melpots2@visi.com
Live, Give, Love
Beyond All Expectation.
Sally Guger
Lakespur Blue Pottery & Sculpture
Lodi, Wisconsin, USA
http://www.saukpr.k12.wi.us/~gugersa/the_art_teachers.htm
---------------------------------
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.
Alisa Clausen on tue 19 feb 08
On Sun, 17 Feb 2008 19:45:24 -0800, Sally Guger
wrote:
>Hi Ron, The turquoise you just posted is a cone 10, could you possibly
please give it to us in a cone 6? The following two cone 6 glazes I am
testing but haven't fired them yet- I have a feeling the Turq. Matt might
not be food safe. Please advise! Thanks in advance. Sally
>
> Turquoise Matt
>
> 51.5 Nepheline Syenite
>20.9 Strontium Carbonate
>7.7 Silica
>6.6 Ball Clay--Old Mine #4
>3.3 Lithium Carbonate
>
>90 Total
>
>Additives
>3.5 Copper Carbonate
>4 Bentonite
>1 Epsom Salts
>
>
Hi Sally
You need just 10 gr. more of Neph. Sye to get the Turquoise mat to unity.
This is a glaze I use a bit of decoratively. It is bright turquoise, but
has a soft surface and scratches easily.
Another Turquoise I use is an adaptation of a glaze originally heavily
loaded with Barium. The color response with Barium subbed with Strontium
is very good.
Barium Blue ^6
30 Strontium Carb.
65 Neph. Syenite
7 Ball Clay
8 Silica
3 Lithium Carb.
ADD
3 Cu. Carb.
Best regards from Alisa in Denmark
Best regards, Alisa in Denmark
| |
|
