Dewitt's Raku Glazes

 

These glazes were collected by Dewitt Gimblet 12/31/98.

 

 

 

 

 


Glaze name: 1 2 3 Clear

Cone: 08 - 06
Firing: Raku
Surface texture: Shiny or Glossy
Color: Transparent Clear
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Gerstley borate            50.00       50.00

EPK                        33.33       33.33

Silica                     16.67       16.67

                        --------    --------

Totals:                   100.00      100.00

Comments:

Quantities are given in 'parts' but not stated whether this is parts

by weight or volume.

 


Glaze name: Alligator

Firing: Raku
Color: metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            50.00        4.00

Bone ash                   25.00        2.00

Nepheline syenite          12.50        1.00

Copper carbonate           12.50        1.00

                        --------    --------

Totals:                   100.00        8.00

Comments:

Recipe in parts by volume.

 


Glaze name: Barium White

Firing: Raku
Color: White
Date: 07/22/98

Recipe: (Percent, Batch)

Gerstley borate            62.66      990.00

Potash Spar (G-200)        12.66      200.00

Silica (Flint)             12.03      190.00

Ball clay (OM-4)            6.33      100.00

Barium carbonate            6.33      100.00

                        --------    --------

Totals:                   100.00     1580.00

Comments:

(Pure to smoky white, depending on clay body, will crackle a bit, but

surface remains smooth, will get a beautiful smoky color in the cracks).

 


Glaze name: Basic white crackle

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            65.00       65.00

Tennesse ball clay          5.00        5.00

Nepheline syenite          15.00       15.00

Tin oxide                  10.00       10.00

Flint                       5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

Branfman's regular white glaze.  Apply it thick and you will get a nice bright,

opaque white.  Also a good base to experiment with.

 


Glaze name: Beads

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Magnesium carb             31.25       50.00

Borax                      25.00       40.00

Gerstley borate            31.25       50.00

Flint                       6.25       10.00

Zircopax                    6.25       10.00

                        --------    --------

Totals:                   100.00      160.00

Comments:

 


Glaze name: Black Gloss

Firing: Raku
Surface texture: Gloss
Color: Black
Date: 06/11/98

Recipe: (Percent, Batch)

Borax                      10.00       10.00

Gerstley borate            40.00       40.00

Soda ash                   20.00       20.00

Nepheline syenite          10.00       10.00

Barnard clay               20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Cobalt carbonate            4.00        4.00

Copper carbonate            2.00        2.00

Comments:

 


Glaze name: Black Raku

Firing: Raku
Color: Black
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            43.14       44.00

Soda ash                   21.57       22.00

Barnard clay               18.63       19.00

Nepheline syenite          10.78       11.00

Cobalt carbonate            3.92        4.00

Copper carbonate            1.96        2.00

                        --------    --------

Totals:                   100.00      102.00

Comments:

From Piepenburg's Book "Raku Pottery"

 


Glaze name: Blue Black Purple

Glaze type: Ca B MidRoad
Cone: 08 - 06
Firing: Raku
Color: silver blue to silver bronze
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Gerstley borate            50.00       50.00

Nepheline syenite          50.00       50.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate           50.00       50.00

Rutile                     50.00       50.00

Comments:

NOTE that recipe is in parts - not stated whether that's parts by

weight or volume We have been using these two glazes along

with white crackle and copper wash and have gotten VERY NICE results.

Apply 1 coat. Stie glaze with each brush stroke to keep rutile in

suspension. Our raku kiln is fired between 1830 and 1900 degrees.

Reduce in very heavy pine needles, broken pine cones and some

sawdust. The surface effect is like a 100 grit sandpaper. Colors

range from a silver blue to silver/bronze with flashes of color that

can run the full spectrum. Lots of bright teal and purple with halos

of fuschia and mustard. Every now and then I get splotches of tomato

red! Can be refired over and over until you love it or ugly it too

death!!

 


Glaze name: Blue crackle

Firing: Raku
Color: Blue
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            75.47       80.00

Cornwall Stone             18.87       20.00

Cobalt carbonate            5.66        6.00

                        --------    --------

Totals:                   100.00      106.00

Comments:

 


Glaze name: Blue Velvet

Firing: Raku
Color: Blue
Date: 07/22/98

Recipe: (Percent, Batch)

Gerstley Borate            30.00      300.00

Nepheline Sy               10.00      100.00

Aluminia Ox                20.00      200.00

Cobalt Carb                20.00      200.00

Rutile                     20.00      200.00

                        --------    --------

Totals:                   100.00     1000.00

Comments:

(beautiful deep multicolor blue, especially if you scrub it)

 


Glaze name: Bob's Copper Red

Firing: Raku
Color: red
Date: 06/11/98

Recipe: (Percent, Batch)

Gerstley borate            59.32       70.00

G-200 Feldspar             25.42       30.00

Frit 3110                   8.47       10.00

Black copper oxide          6.78        8.00

                        --------    --------

Totals:                   100.00      118.00

Comments:

 


Glaze name: Carbon

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Magnesium carb             12.15       30.00

Borax                      32.39       80.00

Gerstley borate            24.29       60.00

Rutile                     12.15       30.00

Red iron oxide             16.19       40.00

Cobalt oxide                2.83        7.00

                        --------    --------

Totals:                   100.00      247.00

Comments:

 


Glaze name: Carole's Perfect White

Cone: 08 - 06
Firing: Raku
Surface texture: ?
Color: White
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Colemanite                 52.63       52.63

Lithium carbonate          10.53       10.53

Nepheline syenite          31.58       31.58

EPK                         5.26        5.26

                        --------    --------

Totals:                   100.00      100.00

Also add:

Tin oxide                   5.26        5.26

Comments:

NOTE: originally specified 'tin oxide or zircopax' but if using

zircopax a larger quantity (8-10%?) may be required.

 

Glaze name: Charlie Riggs Opaque Gloss Crackle

Cone: 06-04
Firing: Raku
Date: 06/16/98

Recipe: (Percent, Batch)

Gerstley borate            41.90       41.90

Potash feldspar            32.40       32.40

Pemco Frit #625            14.90       14.90

Flint                      10.80       10.80

                        --------    --------

Totals:                   100.00      100.00

Comments:

Either Pemco Frit #625 or Ferro #3289

 

Variations --

For Blue, add cobalt carbonate-1/2% to 1%

For Green, add copper carbonate-3% to 6%

 


Glaze name: Chris Thompson's Black

Firing: Raku
Color: Black
Date: 05/13/98

Recipe: (Percent, Batch)

Frit 3110                  25.75       30.00

Nepheline syenite          17.17       20.00

Gerstley borate            42.92       50.00

Manganese dioxide           3.86        4.50

Cobalt oxide                3.43        4.00

Copper oxide                3.86        4.50

iron oxide                  3.00        3.50

                        --------    --------

Totals:                   100.00      116.50

Comments:

Can omit manganese dioxide and still get a nice black.

 


Glaze name: Clear (Soldner's)

Cone: 08 - 06
Firing: Raku
Color: Clear
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Colemanite                 80.00       80.00

Nepheline syenite          20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

 

Glaze name: Clear Base

Firing: Raku
Color: Clear
Date: 10/18/98

Recipe: (Percent, Batch)

Gerstley borate            67.00       67.00

Frit 3403                   8.00        8.00

Nepheline syenite          17.00       17.00

Kaolin                      8.00        8.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

For color variations, add 10% commercial

stain.

 


Glaze name: Clement Dolphin Blue

Firing: Raku
Color: Blue
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            47.46        7.00

Bone ash                   20.34        3.00

Nepheline syenite          13.56        2.00

Cornwall Stone              6.78        1.00

Copper carbonate            6.78        1.00

Cobalt oxide                5.08        0.75

                        --------    --------

Totals:                   100.00       14.75

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery"

 


Glaze name: Cloud White

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            75.00       75.00

Feldspar                   25.00       25.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Copper Blue

Firing: Raku
Color: turquoise to reddish
Date: 07/22/98

Recipe: (Percent, Batch)

Frit 3110                  66.67      700.00

Gerstley Borate             6.67       70.00

Silica (Flint)              9.52      100.00

Soda Ash                    9.52      100.00

Kaolin (EPK)                4.76       50.00

Copper Carb                 2.86       30.00

                        --------    --------

Totals:                   100.00     1050.00

Comments:

(solid turquoise to reddish depending on how you reduce)

 


Glaze name: Copper Luster

Firing: Raku
Date: 10/18/98

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Nepheline syenite          20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Cobalt oxide                1.10        1.10

copper oxide                2.10        2.10

yellow ocher                7.80        7.80

Comments:

Variations --

This glaze looks best when applied thin. I

generally dip the pot once in a thin mixture.

The glaze has a dark cranberry luster in

appearance. I place pieces glazed with

Copper Luster in a lidded trash can filled

with newspaper, since this seems to make

the colors shine a bit brighter.

 


Glaze name: Copper Matt

Firing: Raku
Date: 10/18/98

Recipe: (Percent, Batch)

Red copper oxide           78.00       78.00

Red iron oxide              9.00        9.00

Frit 3110                  13.00       13.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

Adding a drop or two of dishwasher

detergent to the liquid batch facilitates

mixing.

 


Glaze name: Copper Matte

Firing: raku
Color: copper
Date: 06/11/98

Recipe: (Percent, Batch)

Copper carbonate           82.47       80.00

Frit 3110                  10.31       10.00

Red iron oxide              7.22        7.00

                        --------    --------

Totals:                   100.00       97.00

Comments:

 


Glaze name: Copper Penny

Cone: 012 - 06
Firing: Raku
Surface texture: Shiny or Glossy
Color: opaque copper metallic
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Potash feldspar            20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate            2.00        2.00

Cobalt carbonate            1.00        1.00

Yellow Ochre                7.00        7.00

Comments:

 

 


Glaze name: Copper Red Luster

Cone: 08
Firing: Raku
Date: 10/18/98

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Nepheline syenite          20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Black copper oxide          3.00        3.00

Cobalt oxide                1.00        1.00

Comments:

 


Glaze name: Copper Sand

Firing: Raku
Color: Metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            74.42        8.00

Bone ash                   18.60        2.00

Copper carbonate            4.65        0.50

Cobalt oxide                2.33        0.25

                        --------    --------

Totals:                   100.00       10.75

Comments:

Recipe in parts by volume.

 


Glaze name: Copper Stain

Firing: raku
Date: 10/18/98

Recipe: (Percent, Batch)

Frit 3110                  10.00       10.00

Copper carbonate           90.00       90.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

Variations --

Apply stain to pot then wipe off with a

sponge leaving stain just in the crevices.

Coat with Piepenburg’s Clear.

 


Glaze name: Craters

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Magnesium carb              9.43       20.00

Kaolin                      9.43       20.00

Lithium carbonate          28.30       60.00

Borax                      14.15       30.00

Copper carbonate            5.66       12.00

Flint                      28.30       60.00

Bentonite                   4.72       10.00

                        --------    --------

Totals:                   100.00      212.00

Comments:

 


Glaze name: Crusty Rusty

Cone: 08 - 06
Firing: Raku
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Colemanite                 80.00       80.00

Bone ash                   20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate            5.00        5.00

Cobalt                      2.50        2.50

Comments:

 

 


Glaze name: Dark Blue Luster

Cone: 08
Firing: raku
Date: 10/18/98

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Nepheline syenite          20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Cobalt carbonate            3.00        3.00

Iron chromate               5.00        5.00

silver nitrate              1.50        1.50

Comments:

 


Glaze name: Deep Blue Crackle

Firing: rakue
Color: blue
Date: 06/13/98

Recipe: (Percent, Batch)

Gerstley borate            69.50       69.50

Nepheline syenite          17.50       17.50

Zircopax                    8.70        8.70

Kaolin                      4.30        4.30

                        --------    --------

Totals:                   100.00      100.00

Also add:

Cobalt oxide                1.50        1.50

Comments:

 


Glaze name: Deg white Crackle - experimental only

Firing: Raku
Color: White
Date: 11/17/98

Recipe: (Percent, Batch)

Frit 3269                  65.00       65.00

Gerstley borate            30.00       30.00

Silica 325 Mesh             5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Tin oxide                  10.00       10.00

Comments:

Can use Frit P-23 instead of Ferro 3269

 


Glaze name: Del Favero Luster

Firing: Raku
Color: Turquoise to copper penny luster
Date: 09/04/98

Recipe: (Percent, Batch)

Gerstley borate            78.43       80.00

Cornwall Stone             19.61       20.00

Copper carbonate            1.96        2.00

                        --------    --------

Totals:                   100.00      102.00

Comments:

A turquoise glaze that turns to a rich copper penny luster under strong postfiring

reduction (From Piepenburg)

 


Glaze name: Donna's White

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            40.00        1.00

Nepheline syenite          40.00        1.00

Superpax                   20.00        0.50

                        --------    --------

Totals:                   100.00        2.50

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery"

 


Glaze name: Dragonfly

Cone: 08 - 06
Firing: Raku
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Ferro Frit 3134            45.00       45.00

Colemanite                 40.00       40.00

EPK                         8.00        8.00

Silica                      7.00        7.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate            6.00        6.00

Comments:

 

 


Glaze name: Earthmother

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Lithium carbonate          28.04       30.00

Gerstley borate            28.04       30.00

Copper carbonate            2.80        3.00

Flint                      18.69       20.00

Cobalt carbonate            0.93        1.00

Ball clay                   9.35       10.00

Talc                        9.35       10.00

Manganese dioxide           2.80        3.00

                        --------    --------

Totals:                   100.00      107.00

Comments:

 


Glaze name: Eggshell Blue

Firing: Raku
Color: blue
Date: 05/13/98

Recipe: (Percent, Batch)

Borax                      48.49       48.49

Gerstley borate            48.49       48.49

Red iron oxide              0.51        0.51

Copper carbonate            1.01        1.01

Cobalt carbonate            1.52        1.52

                        --------    --------

Totals:                   100.00      100.00

Comments:

Mottled blue to gold orange peel. Recipe calls for granular borax.

 


Glaze name: Egyptian Blue

Firing: Raku
Color: Blue
Date: 06/11/98

Recipe: (Percent, Batch)

Soda ash                   29.47       30.50

Lithium carbonate           8.21        8.50

EPK                        21.74       22.50

Flint                      37.20       38.50

Black copper oxide          2.42        2.50

Bentonite                   0.97        1.00

                        --------    --------

Totals:                   100.00      103.50

Comments:

 


Glaze name: Fantasy

Firing: Raku
Color: metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            73.56       80.00

Bone ash                   18.39       20.00

Tin oxide                   1.15        1.25

Cobalt oxide                2.30        2.50

Black copper oxide          4.60        5.00

                        --------    --------

Totals:                   100.00      108.75

Comments:

From Cap Brook's handout

Variations --

Almost identical to Hawaiian Copper Blue

 


Glaze name: Fatty white crackle

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Frit 3134                  74.07       80.00

Ball clay                   8.33        9.00

Silica                      8.33        9.00

Zircopax                    9.26       10.00

                        --------    --------

Totals:                   100.00      108.00

Comments:

 


Glaze name: Faux Celadon

Glaze type: Ca B
Cone: 08
Firing: raku
Surface texture: Shiny or Glossy
Color: greenish blue
Testing: Untested
Date: 9/20/95

Recipe: (Percent, Batch)

Gerstley borate            75.00       75.00

EPK                        10.00       10.00

Silica                     15.00       15.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Red iron oxide              2.00        2.00

Comments:

You can also use Black Iron Oxide. I, too, am restricted to an electric

kiln and a Raku garbage can kiln in the backyard. Using the Raku kiln

for reduction (closing the damper and tiger torch port completely

after seeing the glaze melt), I have produced some greenish blue

celadon-like bowls. Similar results have been obtained with a

straight forward raku firing.. Try the following which is more or

less a cone 08 glaze and can be easily modified.

 

 


Glaze name: Flamedrops

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Magnesium carb             29.35       40.00

Lithium carbonate          14.67       20.00

Gerstley borate            51.36       70.00

Copper carbonate            4.40        6.00

chrome oxide                0.22        0.30

                        --------    --------

Totals:                   100.00      136.30

Comments:

 


Glaze name: Flat Black

Firing: Raku
Color: Black
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            40.98       50.00

Borax                      40.98       50.00

Cobalt oxide                1.64        2.00

Iron oxide                  8.20       10.00

Rutile                      8.20       10.00

                        --------    --------

Totals:                   100.00      122.00

Comments:

From Capp Brook's handout.

 


Glaze name: Glass Red

Firing: Raku
Color: Red
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            31.25       50.00

Borax                      31.25       50.00

Iron oxide                  6.25       10.00

copper oxide               31.25       50.00

                        --------    --------

Totals:                   100.00      160.00

Comments:

From Capp Brook's handout, he said it looked great on porcelain

 


Glaze name: Gold Raku

Firing: raku
Color: silver-gold
Date: 09/04/98

Recipe: (Percent, Batch)

Gerstley borate            77.67       80.00

Cornwall Stone             19.42       20.00

Tin oxide                   0.97        1.00

silver nitrate              1.94        2.00

                        --------    --------

Totals:                   100.00      103.00

Comments:

A silver-gold glaze that is very reliable.  Mix up only the amount you need

and use it immediately.  From Piepenburg.

 


Glaze name: Great Metallic Red

Firing: Raku
Color: red
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            63.64       63.00

Custer feldspar            12.12       12.00

Flint                      12.12       12.00

Ball clay                   6.06        6.00

Barium carbonate            6.06        6.00

                        --------    --------

Totals:                   100.00       99.00

Also add:

Copper carbonate           12.12       12.00

Comments:

 


Glaze name: Green to Maroon Luster

Cone: 08
Firing: Raku
Color: Green to Maroon
Date: 10/18/98

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Nepheline syenite          20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate            3.00        3.00

Comments:

 


Glaze name: Hasselle Copper Matt

Firing: Raku
Date: 10/18/98

Recipe: (Percent, Batch)

Black copper oxide         80.00       80.00

Ball clay                  20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Bentonite                   2.00        2.00

Comments:

 


Glaze name: Hawaiian Copper Blue

Cone: 06
Firing: raku
Color: Blue
Testing: Untested
Date: 3/26/96

Recipe: (Percent, Batch)

Bone ash                   20.00       20.00

Gerstley borate            80.00       80.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Tin oxide                   1.30        1.30

Copper carbonate            5.00        5.00

Cobalt oxide                2.50        2.50

Comments:

 

Glaze name: Higby Water Blue

Firing: Raku
Color: blue-turquoise-aqua
Date: 09/04/98

Recipe: (Percent, Batch)

Frit 3110                  71.43       70.00

Gerstley borate             5.10        5.00

Silica                      5.10        5.00

Soda ash                   10.20       10.00

EPK                         5.10        5.00

Copper carbonate            3.06        3.00

                        --------    --------

Totals:                   100.00       98.00

Comments:

Beuatiful blue-turquoise-aqua glaze that tneds toward red when applied thinly

and fired in reduction

Variations --

Recipe gives copper carb range of 3-6%

For lime green, increase copper to 8%

 


Glaze name: Hines Patina

Firing: Raku
Color: metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            50.00        7.00

Bone ash                   21.43        3.00

Nepheline syenite          14.29        2.00

Cornwall Stone              7.14        1.00

Copper carbonate            7.14        1.00

                        --------    --------

Totals:                   100.00       14.00

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery"

 


Glaze name: Hutchens Copper Matt

Firing: Raku
Date: 10/18/98

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Nepheline syenite          20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Bone ash                   20.00       20.00

Cobalt carbonate            3.00        3.00

Copper carbonate            7.00        7.00

Comments:

(from Gordon Hutchens)

This glaze seems to produce the best results

in terms of color density and brilliance if

applied in a thin coat. I generally dab on two

coats with a sponge or dip the piece once

into a thin mixture.

 


Glaze name: Kuentzel Blue/Black/Purple

Firing: Raku
Color: Black
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            25.00        1.00

Nepheline syenite          25.00        1.00

Copper carbonate           25.00        1.00

Rutile                     25.00        1.00

                        --------    --------

Totals:                   100.00        4.00

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery"

 


Glaze name: Large Crackle

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            60.00       60.00

Spodumene                  35.00       35.00

Ball clay                   5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

A bit higher temp than most raku glase.  Medium application, doesn't run,

don't apply to heavily (ugly surface). - Mishy

 


Glaze name: Large craze glaze

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Frit 3304                  80.00       80.00

EPK                         5.00        5.00

Borax                      10.00       10.00

Colemanite                  5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

 


Glaze name: Lichens

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Magnesium carb             34.63       50.00

Lithium carbonate           6.93       10.00

Borax                      34.63       50.00

Gerstley borate            20.78       30.00

Copper carbonate            2.77        4.00

Cobalt carbonate            0.28        0.40

                        --------    --------

Totals:                   100.00      144.40

Comments:

 


Glaze name: Lisa Orr's Transparent

Cone: 05-05
Firing: Raku
Color: Clear
Date: 11/10/98

Recipe: (Percent, Batch)

Frit 3110                  64.04       73.00

Gerstley borate             8.77       10.00

Soda ash                   14.04       16.00

EPK                         4.39        5.00

Flint                       7.02        8.00

Bentonite                   1.75        2.00

                        --------    --------

Totals:                   100.00      114.00

Comments:

Variations --

Light blue - add .25 cobalt oxide

Turquoise  - add 3-8% copper carbonate

 


Glaze name: Lori's Surprise Purple

Cone: 08
Firing: raku
Color: Purple
Testing: Untested
Date: 6/3/96

Recipe: (Percent, Batch)

Ferro Frit 3110           100.00      100.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate          600.00      600.00

Red iron oxide             66.67       66.67

Cobalt oxide               33.33       33.33

Comments:

Some one on the list recently asked for a purple raku glaze. What I

thought I had here when I was mixing it was a copper matt untill I

lifted it out from under the reduction can. At first it was almost

black but inside of 15 mins it is the deepest prettiest purple I have

ever seen and I have no idea who gave the receipe to me. They sure do

deserve credit. I sprayed this on JM5, a buff colored ^5 stoneware I

had bisqued to ^08. I fired it in a small old electric I sometimes

use for raku to 1830. After pulling it we went right to a pile of

sand with 8' x8' piece of slick newspaper on the botton and as we

covered it we threw in another the same size on top of the pot,

covered it with the can sealing the edges, waited about an hour

untill it was cool enough to touch and got the purple surprise. If

someone uses this glaze I would really like to hear about their

results.

 


Glaze name: Lubbock Red Black Blue

Cone: 08-06
Firing: Raku
Surface texture: Gloss
Color: Shiny Metallic Red, Blue, Black
Date: 07/19/98

Recipe: (Percent, Batch)

Colemanite                 70.00       70.00

Ball clay                  30.00       30.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Tin oxide                   1.50        1.50

Copper carbonate            5.00        5.00

Comments:

Comments: Glaze type: Raku (Reduction) Transparency: OpaqueColor: Shiny

    Metalic Red, Blue, Black and Silver Visual texture: Random colors Flow:

    Slight Date: 07/07/97 Comments: This is one of the most beautiful Raku glazes

    I've ever seen. There is a lot of metalic silver with a little gold and the reds,

    blues, and blacks mingle in with it (they are metallic too). Proper reduction in

    an airtight container is a must. I fire the piece until the glaze is shiny.

    Immediately I place it in a trash can filled with shredded newspaper and throw

    more on top after the piece is in. Then quickly secure the lid over it. Seems to

    work even better if the paper is really blazing good before the lid is put on.    The colors are random but nearly all are always present somewhere if reduced

    properly. I use a galvanized trash can with a lid that fits securely occasionally

    I'll use a sand pit with a metal bucket. *Variations: Can replace Copper Carb 5

    with Black Copper Oxide 2.5 - I have gotten the same results *How long have

    you been using this glaze? About 4 years *Where is it used? Texas Tech

    University *What do you like most about this glaze? The metallic look *Is

    this glaze reliable? Yes *How do different firing temperatures/atmospheres

    affect the glaze? We always do it the same. *How does the glaze behave on

    different clay bodies? Pretty much the same effect. Colors are brighter on white

    clays. *What consistency should the glaze be for pouring/dipping? About the

    consistency of chocolate milk. *How thickly should the glaze be applied to the

    pot? Medium. I use two quick dips. *What is your kiln type and size? We use a

    gas burning Raku kiln. It is about 24 in diameter. The base is made from a

    section of an old electric kiln. There is a hole in the side for the burner. The top lifts off and is made of a wire frame with flame blanket for the insulation. (I

    dont know if flame Blanket is the real name but it is a fiberous white material.)

    *How do you typically fire? We fire the pot till the glazes becomes shiny, then

    kill the burner, lift off the lid and place the pot in containers filled with

    shredded paper. When it ignites (instantly) we throw more paper on top and

    close the lid. We leave it in there about 15 minutes before taking it out to cool.

   

 

 


Glaze name: Lustrous Blue

Cone: 04
Firing: Raku
Color: metallic blue
Date: 06/14/98

Recipe: (Percent, Batch)

Gerstley borate            44.44       80.00

Custer feldspar            11.11       20.00

Superpax                   11.11       20.00

copper oxide               22.22       40.00

Cobalt oxide               11.11       20.00

                        --------    --------

Totals:                   100.00      180.00

Comments:

This glaze yields a metallic blue surface with variations of magenta, yellow,

and green. After firing, use tongs to place the red-hot pot in a pile of shredded

newspaper for a about a minute, then a)cover and let cool completely or b) remove

from newspaper and quench in water.

 


Glaze name: Mark's Copper Matt

Firing: Raku
Date: 09/04/98

Recipe: (Percent, Batch)

Frit 3110                   9.52       10.00

Copper carbonate           85.71       90.00

Red iron oxide              4.76        5.00

                        --------    --------

Totals:                   100.00      105.00

Comments:

Variations --

Adding 2-5% cobalt and/or manganese can enhance color developent.

 


Glaze name: Matt burgundy red

Firing: Raku
Color: red
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            48.54       50.00

Nepheline syenite          19.42       20.00

Talc                       29.13       30.00

Copper carbonate            2.91        3.00

                        --------    --------

Totals:                   100.00      103.00

Comments:

Reduce heavily.  May need to be fired to slightly lower temperature.

 


Glaze name: Mecham White

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Cornwall Stone             20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Mecham White - Deep Purple

Firing: Raku
Color: Purple
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            76.19       80.00

Cornwall Stone             19.05       20.00

Manganese dioxide           3.81        4.00

Cobalt oxide                0.95        1.00

                        --------    --------

Totals:                   100.00      105.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Mecham White - DelFavero Luster

Firing: Raku
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            78.43       80.00

Cornwall Stone             19.61       20.00

Copper carbonate            1.96        2.00

                        --------    --------

Totals:                   100.00      102.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Mecham White - Dragon Gray

Firing: Raku
Color: Gray
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            79.01       80.00

Cornwall Stone             19.75       20.00

Red iron oxide              0.99        1.00

Cobalt carbonate            0.25        0.25

                        --------    --------

Totals:                   100.00      101.25

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Mecham White - Gold Luster

Firing: Raku
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            77.67       80.00

Cornwall Stone             19.42       20.00

Silver Nitrate              1.94        2.00

Tin oxide                   0.97        1.00

                        --------    --------

Totals:                   100.00      103.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Meisel Blue

Firing: Raku
Color: Blue
Date: 11/09/98

Recipe: (Percent, Batch)

Frit 3110                  86.96      100.00

Tin oxide                   8.70       10.00

Kaolin                      4.35        5.00

                        --------    --------

Totals:                   100.00      115.00

Also add:

Copper carbonate            0.87        1.00

Comments:

Notes: This glaze coagulates quickly. If a batch of it is allowed to stand for

a long time, let the contents dry completely, then add 1-2% bentonite, then

introduce water. Be sure to stir this glaze well before applying. When firing,

be sure the ware is "white hot" before pulling it from the kiln.  Smoke the

ware thoroughly (10-15 minutes). Do not place the ware in water to facilitate

a "quick cool-down" after reduction smoking.

 


Glaze name: Meisel White

Firing: Raku
Color: White
Date: 11/09/98

Recipe: (Percent, Batch)

Frit 3110                  79.37      100.00

Kaolin                      3.97        5.00

Gerstley borate             7.94       10.00

CMC Gum                     0.79        1.00

Zircopax                    7.94       10.00

                        --------    --------

Totals:                   100.00      126.00

Comments:

 


Glaze name: Michigan Patina

Firing: Raku
Color: Metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            51.06        3.00

Cornwall Stone             17.02        1.00

Nepheline syenite          17.02        1.00

Copper carbonate            8.51        0.50

Tin oxide                   4.26        0.25

Black nickel oxide          2.13        0.13

                        --------    --------

Totals:                   100.00        5.88

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery"

 


Glaze name: Middlebrook's Crackle White

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            40.54       60.00

Potash feldspar            33.78       50.00

Barium carbonate           14.86       22.00

Silica                     10.81       16.00

                        --------    --------

Totals:                   100.00      148.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Moon

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Magnesium carb             33.33       50.00

Kaolin                     13.33       20.00

Lithium carbonate           6.67       10.00

Borax                      26.67       40.00

Gerstley borate            13.33       20.00

Copper carbonate            6.67       10.00

                        --------    --------

Totals:                   100.00      150.00

Comments:

 


Glaze name: Moondust

Cone: 08 - 06
Firing: Raku
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Magnesium carbonate        37.00       37.00

Borax                      28.00       28.00

EPK                        14.00       14.00

Lithium carbonate           7.00        7.00

Colemanite                 14.00       14.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate           10.00       10.00

Comments:

 

 


Glaze name: Mr. King's Sculpture Raku

Cone: 07
Firing: Raku
Surface texture: Lichen
Color: Red to Green
Date: 07/19/98

Recipe: (Percent, Batch)

Frit 3110                 100.00      100.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Black copper oxide        400.00      400.00

Red iron oxide             25.00       25.00

Comments:

Comments: Glaze type: Raku (Reduction) Transparency: Opaque Visual texture:

    very much mottled and variable Bubbles: Few Flow: Slight Durability: Medium

    Date: 03/31/97 Comments: Be aware of flaky underfired surface it can often

    give. *Variations: Try Cobalt in place of copper for an interesting flaky blue

    glaze. This glaze is almost bordering on a stain of sorts, and the addition of a

    boron source (e.g. Gerstley Borate) might make it more of a glaze per se. I like

    the odd, dry and aged look it gives large sculptural works. *What do you like most about this glaze? aged/varied

    surface texture. *Is this glaze reliable? Dependability varies in direct

    proportion to the reliability of the person firing it. Overfire or deeply underfire

    and it's not so pretty. *Does this glaze tend to craze/crawl/pinhole/etc.? Watch

    out for flakes. *How do different firing temperatures/atmospheres affect the

    glaze? Tip: Reduce not only in postfire red., but also in the kiln during last

    twenty min of raku (close the damper, cut off primary air) *How does the glaze

    behave on different clay bodies? It likes groggy clay. *What

    consistency should the glaze be for pouring/dipping? THICK *How thickly

    should the glaze be applied to the pot? two to three thick, uneven, coats is best.

    *How does this glaze interact with other glazes? avoid much combination with

    glossy glazes. Good partner with copper matt. *What is your kiln type and size? 3 cubic foot fiber and brick raku top hat

    kiln. Dual Venturi system. *How do you typically fire? One hour raku, starting

    at 3psi, and increasing at 1psi per 10 min until 9psi is reached. Ten to twenty

    min at end of firing is in med. red. Soak moderately at cone 06 or so. *Do you

    experience problems with the raw glaze? add bentonite to solve settling.

    Otherwise, best advice is to mix fresh and firs soon thereafter, otherwise dry

    cracking results. *Any other comments? I want my electric kiln to fire in

    reduction.

 


Glaze name: Ocean Oil

Cone: 06-04
Firing: raku
Surface texture: matt
Date: 12/17/98

Recipe: (Percent, Batch)

Kaolin                      6.85       10.00

Lithium carbonate          20.55       30.00

Borax                      13.70       20.00

Gerstley borate            27.40       40.00

Copper carbonate            4.11        6.00

Whiting                    27.40       40.00

                        --------    --------

Totals:                   100.00      146.00

Comments:

 


Glaze name: Patty's Copper Crap

Cone: 08 - 06
Firing: Raku
Surface texture: ?
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Gerstley borate            75.00       75.00

C-6 Soda Feldspar          20.00       20.00

Borax                       5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate            5.00        5.00

Comments:

On that copper Raku vein going on I thought I should throw in my two

cents worth. I like this glaze because it is a little shiny and no

pocket squeezing cobalt. Fire a little hotter (I don't raku with

cones, so I keep an eye on when it 'slicks off' good) or it does a

bizzare bubbly green mess that won't reduce.

 

 

Glaze name: Piepenburg 50-50

Firing: Raku
Color: Clear
Date: 10/18/98

Recipe: (Percent, Batch)

Frit 3134                  50.00       50.00

Gerstley borate            50.00       50.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

A clear glaze. Apply over stain.

 


Glaze name: Piepenburg Patina

Firing: Raku
Color: metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            40.00        4.00

Bone ash                   30.00        3.00

Nepheline syenite          20.00        2.00

Copper carbonate           10.00        1.00

                        --------    --------

Totals:                   100.00       10.00

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery.  Should be the consistency of very thin milk.

 


Glaze name: Piepenburg Red Bronze

Firing: Raku
Color: Red
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            50.00       50.00

Frit 3134                  45.00       45.00

Tin oxide                   3.00        3.00

Black copper oxide          2.00        2.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Piepenburg's book "Raku Pottery"

 

Under reducing atmosphere conditions, the result is a blood red.  In strong postfiring reduction the result is a bronze-like copper luster.

 


Glaze name: Piepenburg White

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            70.00       70.00

Cornwall Stone             15.00       15.00

Tin oxide                  10.00       10.00

Flint                       5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Plate Tectonic

Cone: 05-04
Firing: Raku
Visual texture: Crusty
Date: 11/10/98

Recipe: (Percent, Batch)

Gerstley borate            20.00       20.00

Lithium carbonate          30.00       30.00

Cryolite                   10.00       10.00

Zircopax                   25.00       25.00

Spodumene                  15.00       15.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Rutile                      8.00        8.00

Copper carbonate            1.00        1.00

Comments:

This is a super-duper, awesome, yummy glaze! It is a bit crusty and then

when you get the firing just hot enough (cone 04+) some it begins to glassify

while other bits of it float on the surface much like oceanic plates in the

magmatic(stet) melt. Sometimes I layer a coat of copper carbonate on top before

I fire it give it a metallic/bronzy finish(05).

 


Glaze name: Post-Pac-Man

Firing: Raku
Color: Metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            61.54        5.00

Bone ash                   12.31        1.00

Nepheline syenite          12.31        1.00

Copper carbonate           12.31        1.00

Red iron oxide              1.54        0.13

                        --------    --------

Totals:                   100.00        8.13

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery"

 


Glaze name: Purple

Firing: Raku
Color: Purple
Date: 06/22/98

Recipe: (Percent, Batch)

Copper carbonate           75.00       90.00

Red iron oxide              8.33       10.00

Cobalt oxide                4.17        5.00

Frit 3110                  12.50       15.00

                        --------    --------

Totals:                   100.00      120.00

Comments:

From www.potters.org Lori Wilkinson.  After pulling it we went right to a

pile of sand with a 8 x 8 inch piece of slick newspaper on the bottom and

as we covered it we threw in another the same size on top of the pot, covered it

with the can sealing the edges, waited about an hour until it was cool enough to

touch and got the purple surprise.  A deepest prettiest purple I have ever seen.

 


Glaze name: Rainbow

Firing: Raku
Color: Metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            74.42       74.42

Bone ash                   18.60       18.60

Copper carbonate            4.65        4.65

Cobalt oxide                2.33        2.33

                        --------    --------

Totals:                   100.00      100.00

Comments:

Fast pull for matt rainbow effect.  Slow pull for rich matt blue.

 


Glaze name: Rainbow Peacock

Cone: 07-06
Firing: Raku
Color: Turquoise
Date: 06/12/98

Recipe: (Percent, Batch)

Gerstley borate            50.63       40.00

Nepheline syenite          16.46       13.00

Flint                      16.46       13.00

Lithium                    16.46       13.00

                        --------    --------

Totals:                   100.00       79.00

Also add:

Copper carbonate            3.80        3.00

Comments:

Turquoise Crackle with beautiful copper accents if reduced and smoked

Variations --

One recipe listing called for Spodumene 20% in this recipe.  ???

 

Glaze name: Raku #1

Cone: 08
Firing: raku
Color: White
Testing: Untested
Date: 12/6/96

Recipe: (Percent, Batch)

Gerstley borate            62.65       62.66

Potash feldspar            12.66       12.66

Flint                      12.03       12.03

Ball clay                   6.33        6.33

Barium carb                 6.33        6.33

                        --------    --------

Totals:                   100.00      100.01

Comments:

 

 


Glaze name: Raku #2

Cone: 08
Firing: raku
Color: White
Testing: Untested
Date: 12/6/96

Recipe: (Percent, Batch)

Frit 3195                  65.00       65.00

Feldspar                   20.00       20.00

Kaolin                      5.00        5.00

Whiting                    10.00       10.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

 


Glaze name: Raku Love

Firing: Raku
Color: Turquoise
Date: 07/10/98

Recipe: (Percent, Batch)

Pemco Frit 25              41.63       42.50

Frit 3134                  26.93       27.50

Lithium carbonate           9.60        9.80

EPK                         6.17        6.30

Silica                     13.71       14.00

Bentonite                   1.96        2.00

                        --------    --------

Totals:                   100.00      102.10

Also add:

Copper carbonate            4.41        4.50

Comments:

Reduce heavily for copper/greenish/yellowish

reduce lightly for beautiful turquoise crackle

 

Can add cucarb anywhere between 2 and 5 g.

 

 

Glaze name: Red Lustre Buck #7

Cone: 06 - 07
Firing: raku
Surface texture: matt
Color: red
Testing: Untested
Date: 1/13/96

Recipe: (Percent, Batch)

Borax                      35.00       35.00

Ferro Frit 3278            34.00       34.00

Gerstley borate            23.00       23.00

Kaolin                      8.00        8.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Red copper oxide           10.00       10.00

Red iron oxide             10.00       10.00

Comments:

Use Borax Decahydrate. Here, designed by me, are two copper red matt

lustres. This one is for fresh mix daily, or dry mix and wet only

what you can use in a day. The borax is washing machine borax. Pemco

frit 830 or Hommel frit K3 will work also. Use a few drops of

detergent to disperse colorant oxides. The above glaze is quite fluid

at C07/06 and needs to be heavily reduced. Move from kiln to

reduction medium as quickly as possible and leave 20 minutes or so.

It produces brillant reds with some blue flashes. High gloss finish

most of the time. There you go. I have used these glazes with good

results. They are BTW variations of Carol Townsend's original 'Tomats

Red'

 

 


Glaze name: Red Lustre Buck #8

Cone: 06 - 07
Firing: raku
Surface texture: matt
Color: red
Testing: Untested
Date: 1/13/96

Recipe: (Percent, Batch)

Gerstley borate            38.00       38.00

Ferro Frit 3134            31.00       31.00

Ferro Frit 3195            31.00       31.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Red copper oxide           10.00       10.00

Red iron oxide             10.00       10.00

Comments:

Here, designed by me, are two copper red matt lustres. Use a few

drops of detergent to disperse colorant oxides. A non-soluble

(mostly) mix that can go on shelf. This version is much more matt and

gives various hues of red no blues worth mentioning. It needs heavy

reduction. There you go. I have used these glazes with good results.

They are BTW variations of Carol Townsend's original 'Tomats Red'.

 

 


Glaze name: Red Raku (from Ken Vavrek)

Firing: Raku
Color: Red
Date: 09/27/98

Recipe: (Percent, Batch)

Nepheline syenite          30.00       30.00

Frit 3230                  20.00       20.00

Flint                      20.00       20.00

Frit 3191                  25.00       25.00

Whiting                     5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Tin oxide                   5.00        5.00

Copper carbonate            3.00        3.00

Red iron oxide              0.50        0.50

Bentonite                   1.00        1.00

Comments:

Note: to produce a good red, this glaze needs to be reduced first in the kiln

and then again in post firing reduction.

 


Glaze name: Revised Molly Blanding

Cone: 06
Firing: Raku
Color: copper matte which flashes burgundy, blue and red
Date: 06/14/98

Recipe: (Percent, Batch)

Bone ash                   24.24        2.00

Colemanite                 60.61        5.00

Frit 3124                   3.03        0.25

Nepheline syenite          12.12        1.00

                        --------    --------

Totals:                   100.00        8.25

Also add:

Cobalt carbonate            1.52        0.13

Copper carbonate           12.12        1.00

Comments:

Recipe in parts by volume.

Increase the cobalt for deeper blue, or add a little manganese to encourage

purples. Like most raku glazed, the higher it's fired, the glossier the

surface.

 


Glaze name: Reynold's Rap

Cone: 08 - 06
Firing: Raku
Color: Green to gold
Testing: Untested
Date: 7/19/95

Recipe: (Percent, Batch)

Gerstley borate            63.64       63.64

Custer feldspar            12.12       12.12

Silica                     12.12       12.12

Ball clay                   6.06        6.06

Barium carbonate            6.06        6.06

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate           12.12       12.12

Comments:

green to gold; good in cracks..use thickly, reduce heavily

 

Glaze name: Roger's Black

Firing: Raku
Color: Black
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            61.54       80.00

Custer feldspar            15.38       20.00

Cobalt oxide                7.69       10.00

Red iron oxide              7.69       10.00

Black copper oxide          7.69       10.00

                        --------    --------

Totals:                   100.00      130.00

Comments:

From Capp Brook's handout

 

A dark blue glaze that develops a nice copper luster in strong

postfiring reduction.

 


Glaze name: Roger's White

Cone: 08
Firing: raku
Color: Clear
Date: 05/13/98

Recipe: (Percent, Batch)

Spodumene                  35.00       35.00

Gerstley borate            60.00       60.00

Tennesse Ball Clay          5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

This is actually a clear (not white) base

recipe. It can be used as is or you can add

colorants on an experimental basis. Add 5%

tin oxide for a white glaze. (From Steven

Branfman, PMI, Jan. 1994)

Variations --

For purple add manganese carbonate 3% and tin oxide 5%

For gray-blue add RIO 1% and cobalt carb .5%

 


Glaze name: Seth's Luster

Firing: Raku
Color: metallic patina
Date: 05/25/98

Recipe: (Percent, Batch)

Gerstley borate            68.82      688.17

Bone ash                   17.20      172.04

Copper carbonate            8.60       86.02

Cobalt carbonate            4.30       43.01

Tin oxide                   1.08       10.75

                        --------    --------

Totals:                   100.00     1000.00

Comments:

 


Glaze name: Shadow raku slip glaze

Firing: Raku
Date: 05/13/98

Recipe: (Percent, Batch)

EPK                         5.00        5.00

Copper carbonate           90.00       90.00

Soda ash                    5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

 


Glaze name: Silver Nitrate Wash

Firing: Raku
Date: 10/18/98

Recipe: (Percent, Batch)

Silver Nitrate              1.96        1.00

Water                      98.04       50.00

                        --------    --------

Totals:                   100.00       51.00

Comments:

 


Glaze name: Silver Raku luster

Cone: 08 - 07 - 06
Firing: raku
Surface texture: glossy luster
Color: silvery luster
Testing: Untested
Date: 12/7/96

Recipe: (Percent, Batch)

Pemco frit P-25            42.07       42.07

Ferro frit 3134            27.13       27.13

Lithium carbonate           9.71        9.71

EPK                         6.24        6.24

Silica                     13.86       13.86

Soda ash                    0.99        0.99

                        --------    --------

Totals:                   100.00      100.00

Also add:

Bentonite                   1.98        1.98

Silver nitrate              2.08        2.08

Comments:

 

 


Glaze name: Silver White Base

Firing: Raku
Color: White
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            50.00        5.00

Nepheline syenite          30.00        3.00

Lithium carbonate          20.00        2.00

                        --------    --------

Totals:                   100.00       10.00

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery"

 


Glaze name: Soda Blue

Cone: 06-04
Firing: Raku
Color: Blue
Date: 06/11/98

Recipe: (Percent, Batch)

Gerstley borate            42.42     3500.00

Soda ash                    6.06      500.00

Frit 3110                  42.42     3500.00

Kaolin                      3.03      250.00

Flint                       6.06      500.00

                        --------    --------

Totals:                   100.00     8250.00

Also add:

Copper carbonate            1.82      150.00

Comments:

Produces a beautiful translucent water blue; also works well as a raku glaze.

 


Glaze name: Soldner Base

Firing: Raku
Color: Clear
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            80.00       80.00

Nepheline syenite          20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Soldner's Red

Firing: Raku
Color: Red
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            41.67       50.00

Borax                      41.67       50.00

Copper carbonate            8.33       10.00

Rutile                      8.33       10.00

                        --------    --------

Totals:                   100.00      120.00

Comments:

 


Glaze name: Superstition

Cone: 06-04
Firing: Raku
Surface texture: Matt
Date: 12/17/98

Recipe: (Percent, Batch)

Lithium carbonate          26.43       30.00

Gerstley borate            35.24       40.00

Copper carbonate            2.64        3.00

Cobalt carbonate            0.44        0.50

Talc                       26.43       30.00

Nepheline syenite           8.81       10.00

                        --------    --------

Totals:                   100.00      113.50

Comments:

 


Glaze name: Tak

Firing: Raku
Color: White
Date: 08/14/98

Recipe: (Percent, Batch)

Frit 3134                  79.37      100.00

Silica                      4.76        6.00

EPK                         7.94       10.00

Tin oxide                   7.94       10.00

                        --------    --------

Totals:                   100.00      126.00

Comments:

 

fat white...big crackle

give it time to cool just a second/deep reduction

 

frit 3134 100

silica 6

epk 10

tin or opax 10 if you want a clear leave this out. bentonite pinch

 

obviously all it is is 3134 with some things to stabalize it a bit.

nice glaze...takes copper well, i have a wonderful blue/green to

red/blood tea bowl....that shows all things copper does in one pot.

 

mel jacobson/mn.

Variations --

Takes copper well

Leave out tin for clear

 


Glaze name: Tin Can

Firing: Raku
Color: metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            48.48        4.00

Nepheline syenite          36.36        3.00

Copper carbonate           12.12        1.00

Black nickel oxide          3.03        0.25

                        --------    --------

Totals:                   100.00        8.25

Comments:

Recipe in parts by volume.

From Piepenburg's book "Raku Pottery".  Should be the consistency of very thin milk.

 


Glaze name: Tom Buck Clear Crackle

Firing: Raku
Color: Clear
Date: 08/28/98

Recipe: (Percent, Batch)

Frit 3191                  80.00       80.00

EPK                        20.00       20.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Tom Buck on ClayNet - high expansion & therefore good crackle

 


Glaze name: Tomat's Red Raku

Cone: 08
Firing: raku
Color: Red
Date: 10/18/98

Recipe: (Percent, Batch)

Borax                      50.00       50.00

Gerstley borate            50.00       50.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate           40.00       40.00

Red iron oxide             10.00       10.00

Comments:

Apply stain to pot then wipe off with a

sponge leaving stain just in the crevices.

Coat with Piepenburg’s Clear. (From Brother

Don Smith, CM, Nov. 1994)

 

Similar to Tomato Red, but twice the cucarb and rio

 


Glaze name: Tomato Red

Cone: 08
Firing: raku
Surface texture: Shiny or Glossy
Color: Opaque coppery Red
Testing: Untested
Date: 9/20/95

Recipe: (Percent, Batch)

Gerstley borate            50.00       50.00

Borax                      50.00       50.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper Oxide               20.00       20.00

Red iron oxide              5.00        5.00

Comments:

For a blue variation.... copper oxide 3% cobalt oxide 3% instead of

the previous colorants.

 

 


Glaze name: Unknown Matt

Cone: 08-06
Firing: Raku
Date: 11/10/98

Recipe: (Percent, Batch)

Lithium carbonate          35.00       35.00

Gerstley borate            30.00       30.00

Bone ash                   35.00       35.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Copper carbonate            6.00        6.00

Rutile                      2.00        2.00

Cobalt carbonate            0.50        0.50

Comments:

The lithium and gerstley borate may need to be adjusted.  More gerstley borate

will make it less matt and less likely to run.  Firing in light reduction or

oxidation gives brighter colors.

 

 


Glaze name: Vanna White

Firing: Raku
Surface texture: Semi-gloss
Color: White
Date: 07/17/98

Recipe: (Percent, Batch)

Frit P-311                 66.70       68.00

Custer feldspar            24.52       25.00

Ball clay                   7.06        7.20

Tin oxide                   1.72        1.75

                        --------    --------

Totals:                   100.00      101.95

Comments:

White, large crackle

 

Can substitute Frit 3124 for P-311

 

Much higher firer than typical 80/20 raku glaze.

 

Glaze name: White Matt

Firing: Raku
Color: White (or rather clear, I'll bet)
Date: 11/23/98

Recipe: (Percent, Batch)

Gerstley borate            67.80     3200.00

Nepheline syenite          16.95      800.00

Bone ash                   15.25      720.00

                        --------    --------

Totals:                   100.00     4720.00

Comments:

 


Glaze name: Wood Ash Crackle

Firing: Raku
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            45.00       45.00

Wood ash                   35.00       35.00

Flint                      15.00       15.00

Zinc oxide                  5.00        5.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Worthington

Firing: Raku
Color: Clear
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            55.00       55.00

EPK                        30.00       30.00

Flint                      15.00       15.00

                        --------    --------

Totals:                   100.00      100.00

Comments:

From Piepenburg's book "Raku Pottery"

 


Glaze name: Yellow crackle

Firing: Raku
Color: Yellow
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            75.47       80.00

Cornwall Stone             18.87       20.00

Vanadium stain              5.66        6.00

                        --------    --------

Totals:                   100.00      106.00

Comments:

Vanadium stain 3-6%

 


Glaze name: Yukio's Rainbow Sand

Firing: Raku
Color: metallic patina
Date: 06/14/98

Recipe: (Percent, Batch)

Colemanite                 70.00       70.00

Bone ash                   20.00       20.00

Nepheline syenite          10.00       10.00

                        --------    --------

Totals:                   100.00      100.00

Also add:

Lithium carbonate           3.00        3.00

Copper carbonate            5.00        5.00

Cobalt carbonate            0.50        0.50

Comments:

Not enough redux(?)= yellow green just right=sandy rainbows

applied thick=lizard like scales too thick=falls off when cool, not sharp pieces.