Mid Fire Glazes
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Ceramics Today

Edouard's Bleu marbré cendré (Mottled blue ash glaze)
Cone 4
 

Nepheline/Syenite 
Hardwood ash(washed) 
Silica 
Ball clay 
Gerstley borate 

Bentonite 
Ultrox 
Cobalt oxide

 25% 
20% 
20% 
5% 
30% 

2% 
15% 
5%
View an example of this glaze!
Thank you to Edouard Bastarache
for supplying glaze recipe and image.
 

Edouard's Brun veiné cendré (Mottled brown ash glaze)
Cone 4
 

Nepheline/Syenite
Silica
Hardwood ash (washed)
Lithium carbonate
Ferro Frit #3134
Bentonite
Sorelslag		 35% 
16% 
27% 
3% 
10%
3%
12% 
View an example of this glaze!
Thank you to Edouard Bastarache
for supplying glaze recipe and image.
 

Steve's Brilliant Ink Blue
Cone 4
Oxidation or Reduction
 

Ferro Frit 3134 
Potash Feldspar 
Ball Clay 
Zinc Oxide (dense) 
Cobalt Carbonate 
Cobalt Oxide		 50.0 
20.0 
20.0 
10.0 
1.5 
1.5
 

Translucent Clear Gloss
Cone 4 - 5
Oxidation
 

Ferro Frit 4508 
Nephelene Syenite 
Ball Clay 
Tin Oxide		 60.0 
20.0 
20.0 
6.0
 

Clear to Milky Crackle
Cone 4 - 6
Oxidation
 

Lithium Carbonate toxic! 
Gerstly Borate 
Zinc Oxide (calcined) 
Calcium Flouride 
Silica 
Bentonite		 25.0 
25.0 
5.0 
5.0 
25.0 
2.0
Not suitable for tableware!
 

Clear Satin Matt
Cone 4 - 7
Oxidation
 

Ferro Frit 4508 
Potash Feldspar 
Ball Clay 
Magnesium Carbonate		 50.0 
20.0 
20.0 
10.0
 

Smooth White Matt
Cone 4 - 7
Oxidation
 

Ferro Frit 4616 
Nephelene Syenite 
Ball Clay		 60.0 
20.0 
20.0
 

Clear Bright Gloss
Cone 5
Oxidation
 

Gerstly Borate 
Silica 
Kaolin 
Potash Feldspar 
Bentonite		 51.0 
31.0 
16.0 
3.0 
1.0
 

Helens Matt Textured Rust
Cone 5
Neutral Gas Atmosphere
 

Potash Feldspar 
Nephelene Syenite 
Dolomite 
Kaolin 
Silica 
Barium Carbonate 
Copper Carbonate		 15 
20 
25 
5 
15 
5 
2
Not suitable for tableware!

Helens Satin Mottled Eucalyptus
Cone 5
Neutral Gas Atmosphere
 

Nephelene Syenite 
Whiting 
Ball Clay 
Lithium Carbonate toxic! 
Silica 
Copper Carbonate		 40 
25 
25 
5 
5 
2
Comment: Results in muddy color in electic kiln. Not suitable for tableware!
 
 
Clear Gloss
Cone 5 - 6
Oxidation
 
Nephelene Syenite 
Ferro Frit 4508 
Kaolin 
Silica		 40.0 
45.0 
10.0 
10.0
 

Clear Gloss
Cone 6
Oxidation
 

Gerstly Borate 
Silica 
Kaolin 
Whiting 
Bentonite		 49.5 
32.0 
16.0 
1.5 
1.0
 

Clear Gloss
Cone 6
Oxidation
 

Nephelene Syenite 
Magnesium Carbonate 
Zinc Oxide 
Kaolin 
Silica 
Bentonite		 35.5 
14.6 
11.9 
2.4 
35.6 
1.0
 

Clear Gloss
Cone 6
Oxidation
 

Nephelene Syenite 
Gerstly Borate 
Silica 
Kaolin 
Bentonite		 46.2 
28.0 
20.4 
5.4 
1.0
 

Clear Gloss
Cone 6
Oxidation
 

Volcanic Ash 
Ferro Frit 3134 
Koalin 
Bentonite		 63.7 
27.3 
9.0 
1.0
 

Helens Satin Brilliant Blue
Cone 6-7
Neutral Gas Atmosphere
 

Potash Feldspar 
Nephelene Syenite 
Zinx Oxide 
Silica 
Barium Carbonate  toxic!
Cobalt Oxide		 15 
20 
20 
5 
40 
0.7
Not suitable for tableware!
 

Translucent Clear
Cone 6 - 7
Oxidation
 

Potash Felspar 
Calcite 
Silica 
Ball Clay 
Ferro Frit 4508 
Barium Carbonate toxic!		 25.0 
20.0 
35.0 
25.0 
20.0 
10.0
Not suitable for tableware!
 
Clear Crackle
Cone 6
Oxidation
 
Volcanic Ash 
Ferro Frit 3134 
Kaolin 
Kaolin (calcined) 
Bentonite		 52.5 
28.0 
5.3 
4.0 
2.0

 

Ababi's Cone 6 Glazes

FALLS CREEK SHINO ABABI.#6
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Cone 6
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FRIT 3134 40.00
RED CLAY (GRT) 30.00
Dolomite 5.00
ULTROX 10.00
Tin Oxide 5.00
Red Iron Oxide 1.00
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Seger Weight%
KNO 0.287 7.20%
CaO 0.606 12.54%
MgO 0.107 1.59%
Al2O3 0.194 7.30%
B2O3 0.463 11.89%
SiO2 2.291 50.83%
ZrO2 0.190 8.64%
K2O 0.052 1.82%
Na2O 0.235 5.37%
Al:Si 11.81
Expan. 7.57
ST 323.02

You can try it with any red clay. This recipe substitutes a recipe with lithium carbonate.
To get the yellow breaking brown I had to add 1 RIO. You might not need it if your local red clay has more than 7% Fe2O3. Use on buff clay body.

SUPERCRAWL AVERAGE 4
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Cone 6
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Cryolite 15.00
ULTROX 35.00
BALL CLAY AK 9.00
Magnesium Carb Light 11.00
Nepheline Syenite 30.00
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Seger Weight%
KNO 0.551 12.59%
CaO 0.013 0.26%
MgO 0.436 6.21%
Al2O3 0.430 15.47%
SiO2 1.826 38.75%
ZrO2 0.612 26.62%
TiO2 0.004 0.10%
K2O 0.047 1.56%
Na2O 0.504 11.03%
Al:Si 4.25
Expan. 8.31
ST 367.33
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And

SUPERCRAWL #6
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Cone 6 1201 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Nepheline Syenite 10.00
Magnesium Carb Light 3.66
BALL CLAY AK 3.00
Cryolite 25.00
ULTROX 58.33
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Seger Weight%
KNO 0.813 14.17%
CaO 0.005 0.08%
MgO 0.181 2.03%
Al2O3 0.373 10.57%
SiO2 1.776 29.63%
ZrO2 1.271 43.49%
TiO2 0.001 0.03%
K2O 0.020 0.51%
Na2O 0.794 13.66%
Al:Si 4.75
Expan. 8.67
ST 345.52

Both recipes must be like "sour cream". You better add CMC just before use, apply several times until the glaze crakles (i.e. before the firing). The CMC will help it to stay on the ware. As times passes you will learn how much or which of the two you prefare. I like #6

PLASTIC TOUCH
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Cone 6 1201 deg.C. -
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STRONTIUM CARBONATE 23.00
Bone Ash 4.00
Dolomite 3.00
NORFLOAT POTASH FELDSPAR 16.00 like G-200 not far from custer feldspar
Calcium Carbonate 7.00 FRIT 3110 23.00 ENGLISH KAOLIN CC31 24.00 copper
oxide 3.00 ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Seger Weight%
KNO 0.228 8.30%
CaO 0.379 10.62%
MgO 0.031 0.63%
SrO 0.362 18.76%
Al2O3 0.285 14.54%
P2O5 0.030 2.13%
B2O3 0.020 0.70%
SiO2 1.475 44.32%
K2O 0.077 3.64%
Na2O 0.151 4.67%
Al:Si 5.17
Expan. 9.65
ST 377.62
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The glaze feels like touching plastic it is milky as clear and delicate turqouise.

ABABI'S CONCRET FOR ^6
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Cone 6 1201 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Portland Cement 22.00
Magnesium Carb Light 8.00
Borax 15.00
ENGLISH KAOLIN CC31 20.00
SILICA 15.00
Cryolite 20.00
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Seger Weight%
KNO 0.329 14.83%
CaO 0.469 18.25%
MgO 0.202 5.66%
Al2O3 0.260 18.39%
B2O3 0.075 3.64%
SiO2 0.941 39.24%
K2O 0.030 1.98%
Na2O 0.299 12.85%
Al:Si 3.62
Expan. 11.55
ST 363.58
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A kind of silky clear mottled glaze ( the fluor in the cryolite has a mottling efect) While firing the fluor fumes are not healthy! Make as much as you need for one session. Looks different thin or thick!
Disclaimer: It is the responsibility of anybody using the supplied glaze recipes to be informed of glaze dangers and to ensure the proper safety precautions are met when mixing and using glazes. In general glaze components marked 'toxic!' should not be used for tableware. Othert unmarked ingredients may be harmful to health on skin contact or if ingested. Frits may contain Lead Bisilicate. General safety precautions for ceramic materials apply. Contact a supplier, lecturer or professional if in doubt. Neither Ceramics Today nor its Guide Steven Goldate will bear any responsibility for incorrectly used glazes and/or ingredients, nor for any damages due to unexpected glaze results. All glazes should be tested before use.