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Cone 6 Reduction Glazes  

CAC Celadon

CAC Celadon

Grolleg Kaolin - 3.5
Custer Feldspar - 44.2
Silica - 22.3
Strontium Carbonate - 12.0
Whiting - 5.4
Bentonite - 2.0
Black Iron Oxide - 1.0

From Lynn Berman of the Google ^6 reduction glaze group who got it during a John Britt workshop at Long Beach Island Foundation of the Arts and Sciences.

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Dark Green Glossy

Dark Green Glossy

Soda Feldspar – 50
Whiting – 18.8
Ball Clay, OM4 – 14.8
Silica – 5.9
Gerstley Borate – 9.9
Copper Carbonate – 5
Red Iron Oxide – 1
This glaze is an oxidation glaze, a dark transparent green.
In reduction, glaze can develop areas of reduced copper red.
Thick application may go metallic black.
Due to amount of copper, do not consider this a stable, functional glaze

Another Blue

Another Blue

OM4 Ball Clay - 19.5
Whiting - 12.5
Nepheline Syenite - 13.0
Ferro Frit 3134 - 25
Silica - 30
Bentonite - 2.0
Cobalt Carbonate - 2.0
Red Iron Oxide - 1.5
Ron Roy Oxidation Clear as baseplus colorants from Dark Blue from Glaze It Forward group.

Don Davis Copper Red

Don Davis Copper Red

Nepheline Syenite – 38
Custer Feldspar – 8
Whiting – 9
Gerstley Borate – 15
EPK – 7
Silica – 23
Tin Oxide – 1.5
Copper Carbonate – 0.5
From Wheel Thrown Ceramics by Don Davis.
After testing several copper reds, this one remained in suspension the longest.
Needs a medium – thick application.

Teadust Temmoku

Teadust Temmoku

Custer Feldspar - 35
Whiting - 20
OM4 Ball Clay - 15
Silica - 30
Red Iron Oxide - 10
From Rick Malmgren, Ceramics Monthly, October 2000. A cone 10 that works equally well at cone 6; yields yellow "tea dust" crystals in reduction

Ron Roy's Oxidation Clear

Ron Roy’s Oxidation Clear

EPK – 19.5
Whiting – 12.5
Nepheline Syenite – 13
Ferro Frit 3134 – 25
Silica – 30
From Carol Baker Cotton.
Originally an oxidation glaze, works well in reduction.

Raw Sienna

Raw Sienna

Wollastonite – 28
Ferro Frit #3195 - 23
Nepheline Syenite – 4
EPK – 28
Silica – 17
Red Iron Oxide – 6
Rutile – 6
From John Hesselberth and Ron Roy's "Mastering Cone Six Glazes"

Sensitive to application thickness and temperature.
This glaze will run if thick.

 

Ohata Kaki

Ohata Kaki

Custer Potash Feldspar – 52
Bone Ash – 14
Silica – 12
Dolomite – 8
EPK – 6.1
Lithium Carbonate – 4
Gertsley Borate – 4
Red Iron Oxide – 10
Thin to medium application

Turquoise Matte

Turquoise Matte

Nepheline Syenite – 61.5
Strontium Carbonate – 20.9
Silica – 7.7
Ball Clay, OM4 – 6.6
Lithium Carbonate – 3.3
Bentonite – 4
Copper Carbonate – 3.5
An oxidation turquoise matte.
Develops blushes of reddish tonesempty

Shino

Shino

Nepheline Syenite – 40
Spodumene – 30
Soda Ash – 8
OM4 Ball Clay – 17
EPK – 5
Orange with thin application, White with thick application
Mix Soda Ash with hot water before adding to glaze batch.
This glaze does not mix well with other glazes.

Variegated Slate Blue

Variegated Slate Blue

Ferro Frit 3195 – 20
Wollastonite – 29
Nepheline Syenite – 4
EPK – 30
Silica – 17
Rutile – 6
Copper Carbonate – 3
Cobalt Carbonate – 1.5
An oxidation glaze from Mastering Cone 6 Glazes.
Very sensitive to application thickness and temperature.

Matte light blue cooler, glossy blue-green hotter

VC "D" Base

VC “D” Base

Soda Feldspar – 51
Whiting -  19
Zinc Oxide – 9
EPK – 15
Silica – 6
A smooth, somewhat grayed, mat surface.
May be made whiter by adding Zircopax or Tin Oxide.
Other glazes work well over this glaze.