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quest for ^6 oxidation glazes...

updated mon 14 dec 98

 

Julene Thom on sun 6 dec 98

My apologies if this is a redundant question... I have been following this
list for only the past few months.
I am considering trying a bit of glaze testing at ^6, however my experience
has been primarily at low temp ranges and am wondering if there is a website
or book with a starting list of base glazes at ^6 (or ^10 with the solution
to alter for ^6) that anyone might recommend.
Thanks and please respond to: RidgeviewS@aol.com
JMThom

Theodore Banton on mon 7 dec 98

Hey, all I get to use is cone 6.

What exactly are you in the mood for at Cone 6. My pallette is limited and
not all are tested, but I have had pretty good success. If you want any, just
ask for a particular and I'll give it.

One great book is: Ceramic Formulas: The complete Compendium. Also, check out
old Ceramics Monthlys They have plenty

Michelle Lowe on mon 7 dec 98

At 10:23 PM 12/6/98 EST, Julene Thom wrote:
>----------------------------Original message----------------------------
>My apologies if this is a redundant question... I have been following this
>list for only the past few months.
>I am considering trying a bit of glaze testing at ^6, however my experience
>has been primarily at low temp ranges and am wondering if there is a website
>or book with a starting list of base glazes at ^6 (or ^10 with the solution
>to alter for ^6) that anyone might recommend.

Hi JM

This is a post I sent to clayart a couple years ago (has it been that long?)
Hope it helps you get a start, testing can be lots of fun!

>Tested some clears last week.
>On B-mix clay (white stoneware)
>Test tiles were little bowls with a brush mark of red iron oxide and
>another of a blue underglaze (Duncan).
>
>Fired in my electric kiln to cone 7-ish, with a one hour soak at the end.
>I found most of these clear recipes on the CeramicsWeb, either in the
>database or the clayart archived glazes by searching for the keyword
>"clear" and/or by browsing the cone 6 recipes.
>
>and now...for the results...
>
>I. oops, no name for this one, but it's color: Semi-opaque Peacock Blue
>(tested it without the colorants and with)
> Cone: 5 - 6
> Color: Semi-opaque Peacock Blue
> Surface: Satin Matte
>
>Nepheline Syenite 42.00
>Gerstley Borate 12.00
>Dolomite 7.00
>Talc 14.00
>EPK 5.00
>Flint 20.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>Cobalt Carbonate 0.50
>Chrome Oxide 0.50
>Iron Oxide 0.50
>
>
>
>Without colorants: semigloss clear, washes out the iron and the underglaze
>slightly, crazed very slightly where pooled but not anywhere else.
>
>With colorants: not really peacock blue, more a hunter/forest green semi
>translucent with iron oxide looking really nice underneath and underglaze
>also peeking through.
>
>II. Yikes, guess I didn't get all the glaze names, sorry, color: opaque
white
>I tested with and without tin oxide, both versions a VERY dry surface, not
>really functional, I'd say it needs more flux. Colorants show through on
>both, both are white (at least in their unmelted state).
>
>Cone: 5 - 6
> Color: Opaque White
> Surface: Satin
> Firing Type: Ox or Red
>Kona F-4 Spar 19.00
>Custer Feldspar 19.00
>Nepheline Syenite 19.00
>Dolomite 25.00
>Whiting 6.00
>Kaolin 12.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>Tin Oxide 7.50
>
>III. Glaze name: V.C. G 5
>very glossy, crazed, washed almost all the iron oxide out, underglaze is
>nice underneath.
>
>UnitGlaze Name: V.C. G 5
> Cone: 5 - 6
> Color: Semi-opaque Clear
> Surface: Semi-Gloss
> Firing Type: Ox or Red
>
>Nepheline Syenite 40.00
>Gerstley Borate 5.00
>Whiting 16.00
>Dolomite 3.00
>Zinc Oxide 2.00
>Frit 3124 10.00
>EPK 4.00
>Flint 20.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>IV. Glaze name: V. C. Karen Weinkauf
>nice semi gloss surface, great melt, iron and underglaze nice underneath,
>slight craze where pooled
>
>Glaze Name: V.C. Karen Weinkauf
> Cone: 4 - 6
> Color: Transparent Clear
> Surface: Very Glossy
> Firing Type: Oxidation
>
>Frit 3110 40.00
>Frit 3124 10.00
>Nepheline Sye 20.00
>Flint 15.00
>Clay 10.00
>Soda Ash 5.00
> Total: 100.00 %
>
>
>
>V. Glaze name: Matt Base 5
>beautiful semi matt, nice melt, washed out iron slightly, underglaze nice.
>
> AlGlaze Name: Matt Base 5
> Cone: 5 - 6
> Color: SemiOpaque White
> Surface: Satin Matte
> Firing Type: Ox or Red
>
>Custer Feldspar 40.00
>Frit 3124 9.00
>Talc 9.00
>Whiting 16.00
>EPK 10.00
>Flint 16.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>VI. Glaze name: Transparent 4
>very glossy, crazed, iron oxide and underglaze both still bright but sort
>of moved in firing...
>
>Glaze Name: Transparent 4
> Cone: 5 - 6
> Color: Transparent Clear
> Surface: Glossy
> Firing Type: Ox or Red
>
>Cornwall Stone 47
>Gerstley Borate 47
>EPK 4
>Bentonite 2
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>VII. Transparent Glossy 3
>glossy, crazed, washed out iron oxide, sort of washed out underglaze but
>not totally
>EGlaze Name: Transparent Glossy 3
> Cone: 5 - 6
> Color: Transparent Clear
> Surface: Glossy
> Firing Type: Ox or Red
>
>Custer Feldspar 40.00
>Gerstley Borate 18.00
>Whiting 16.00
>EPK 10.00
>Flint 16.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>VIII. no name (sorry)
>My absolute favorite of all, semi matt, beautiful surface, iron and
>underglaze relatively stable underneath.
>
>Glaze Name: SCVC 5
> Cone: 5 - 6
> Color: Semi - opaque White
> Surface: Semi-satin, Waxy Matt
> Firing Type: Ox or Red
>
>Cornwall Stone 40.00
>Frit 3124 9.00
>Talc 9.00
>Whiting 16.00
>EPK 10.00
>Flint 16.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>IX. Basic
>gloss, crazed, iron and underglaze VERY stable underneath, if this glaze
>wasn't crazed I'd like it the best for leaving the underneath decoration
>the most like intended.
>
>UnityName: Basic
> Cone: 5 - 6
> Color: Variable
> Surface: Variable
> Firing Type: Ox or Red
>
>K-200 Feldspar 43.00
>EPK 14.00
>Whiting 20.00
>Flint 23.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>X. Gloss Clear (not sure where I got this, send for recipe)
>glossy, not crazed, left iron and underglaze fairly stable
>
>Gloss Clear
>Gerstley Borate 25
>Flint 15
>Kaolin 15
>
>XI. Satin White (tested without tin oxide)
>semi opaque white (even without tin!) semi gloss, no craze, colorants look
>nice underneath although partially covered by magnesium on surface.
>
>Satin White
>Flint 15
>EPK 2.5
>F4 Spar 10
>Talc 7
>Gerstley Borate 16
>

>Tested some clears last week.
>On B-mix clay (white stoneware)
>Test tiles were little bowls with a brush mark of red iron oxide and
>another of a blue underglaze (Duncan).
>
>Fired in my electric kiln to cone 7-ish, with a one hour soak at the end.
>I found most of these clear recipes on the CeramicsWeb, either in the
>database or the clayart archived glazes by searching for the keyword
>"clear" and/or by browsing the cone 6 recipes. There is a search by glaze
>name, so will post these. If anyone has trouble finding the recipes, email
>me privately and I'll post them to you.
>
>and now...for the results...
>
>I. oops, no name for this one, but it's color: Semi-opaque Peacock Blue
>(tested it without the colorants and with)
> Cone: 5 - 6
> Color: Semi-opaque Peacock Blue
> Surface: Satin Matte
>
>Nepheline Syenite 42.00
>Gerstley Borate 12.00
>Dolomite 7.00
>Talc 14.00
>EPK 5.00
>Flint 20.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>Cobalt Carbonate 0.50
>Chrome Oxide 0.50
>Iron Oxide 0.50
>
>
>
>Without colorants: semigloss clear, washes out the iron and the underglaze
>slightly, crazed very slightly where pooled but not anywhere else.
>
>With colorants: not really peacock blue, more a hunter/forest green semi
>translucent with iron oxide looking really nice underneath and underglaze
>also peeking through.
>
>II. Yikes, guess I didn't save all the glaze names, sorry, color: opaque
white
>I tested with and without tin oxide, both versions a VERY dry surface, not
>really functional, I'd say it needs more flux. Colorants show through on
>both, both are white (at least in their unmelted state).
>
>Cone: 5 - 6
> Color: Opaque White
> Surface: Satin
> Firing Type: Ox or Red
>Kona F-4 Spar 19.00
>Custer Feldspar 19.00
>Nepheline Syenite 19.00
>Dolomite 25.00
>Whiting 6.00
>Kaolin 12.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>Tin Oxide 7.50
>
>III. Glaze name: V.C. G 5
>very glossy, crazed, washed almost all the iron oxide out, underglaze is
>nice underneath.
>
>UnitGlaze Name: V.C. G 5
> Cone: 5 - 6
> Color: Semi-opaque Clear
> Surface: Semi-Gloss
> Firing Type: Ox or Red
>
>Nepheline Syenite 40.00
>Gerstley Borate 5.00
>Whiting 16.00
>Dolomite 3.00
>Zinc Oxide 2.00
>Frit 3124 10.00
>EPK 4.00
>Flint 20.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>IV. Glaze name: V. C. Karen Weinkauf
>nice semi gloss surface, great melt, iron and underglaze nice underneath,
>slight craze where pooled
>
>Glaze Name: V.C. Karen Weinkauf
> Cone: 4 - 6
> Color: Transparent Clear
> Surface: Very Glossy
> Firing Type: Oxidation
>
>Frit 3110 40.00
>Frit 3124 10.00
>Nepheline Sye 20.00
>Flint 15.00
>Clay 10.00
>Soda Ash 5.00
> Total: 100.00 %
>
>
>
>V. Glaze name: Matt Base 5
>beautiful semi matt, nice melt, washed out iron slightly, underglaze nice.
>
> AlGlaze Name: Matt Base 5
> Cone: 5 - 6
> Color: SemiOpaque White
> Surface: Satin Matte
> Firing Type: Ox or Red
>
>Custer Feldspar 40.00
>Frit 3124 9.00
>Talc 9.00
>Whiting 16.00
>EPK 10.00
>Flint 16.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>VI. Glaze name: Transparent 4
>very glossy, crazed, iron oxide and underglaze both still bright but sort
>of moved in firing...
>
>Glaze Name: Transparent 4
> Cone: 5 - 6
> Color: Transparent Clear
> Surface: Glossy
> Firing Type: Ox or Red
>
>Cornwall Stone 47
>Gerstley Borate 47
>EPK 4
>Bentonite 2
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>VII. Transparent Glossy 3
>glossy, crazed, washed out iron oxide, sort of washed out underglaze but
>not totally
>EGlaze Name: Transparent Glossy 3
> Cone: 5 - 6
> Color: Transparent Clear
> Surface: Glossy
> Firing Type: Ox or Red
>
>Custer Feldspar 40.00
>Gerstley Borate 18.00
>Whiting 16.00
>EPK 10.00
>Flint 16.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>VIII. no name (sorry)
>My absolute favorite of all, semi matt, beautiful surface, iron and
>underglaze relatively stable underneath.
>
>Glaze Name: SCVC 5
> Cone: 5 - 6
> Color: Semi - opaque White
> Surface: Semi-satin, Waxy Matt
> Firing Type: Ox or Red
>
>Cornwall Stone 40.00
>Frit 3124 9.00
>Talc 9.00
>Whiting 16.00
>EPK 10.00
>Flint 16.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>IX. Basic
>gloss, crazed, iron and underglaze VERY stable underneath, if this glaze
>wasn't crazed I'd like it the best for leaving the underneath decoration
>the most like intended.
>
>UnityName: Basic
> Cone: 5 - 6
> Color: Variable
> Surface: Variable
> Firing Type: Ox or Red
>
>K-200 Feldspar 43.00
>EPK 14.00
>Whiting 20.00
>Flint 23.00
> Total: 100.00 %
> Also add: (colorants, etc.)
>
>
>X. Gloss Clear (not sure where I got this, send for recipe)
>glossy, not crazed, left iron and underglaze fairly stable
>
>Gloss Clear
>Gerstley Borate 25
>Flint 15
>Kaolin 15
>
>XI. Satin White (tested without tin oxide)
>semi opaque white (even without tin!) semi gloss, no craze, colorants look
>nice underneath although partially covered by magnesium on surface.
>
>Satin White
>Flint 15
>EPK 2.5
>F4 Spar 10
>Talc 7
>Gerstley Borate 16
>




Michelle Lowe, potter in the Phoenix desert \|/ |
mishlowe@indirect.com -O- | |
mishlowe@aztec.asu.edu /|\ | | |
|_|_|
____ |
http://www.amug.org/~mishlowe -\ /-----|-----
( )
<__>

Norm Straker on sun 13 dec 98

JMThom,
I have used this glaze thanks to Tony Hansen.

http://digitalfire.com/education/glaze/cone6.htm

This is a great starting place. Several links associated to this base
glaze.

Also the book, The Ceramic Spectrum is a great book and tons of help.
By Robin Hopper

Hope this helps! Norm! 8^o

On Sun, 6 Dec 1998 22:23:25 EST Julene Thom writes:
>----------------------------Original
>message----------------------------
>My apologies if this is a redundant question... I have been following
>this
>list for only the past few months.
>I am considering trying a bit of glaze testing at ^6, however my
>experience
>has been primarily at low temp ranges and am wondering if there is a
>website
>or book with a starting list of base glazes at ^6 (or ^10 with the
>solution
>to alter for ^6) that anyone might recommend.
>Thanks and please respond to: RidgeviewS@aol.com
>JMThom
>

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