GLAZE FORMULAS AND OTHER USEFUL INFORMATION

GLAZE FORMULAS
AND
OTHER USEFUL INFORMATION

The first thing I'm putting on this page is a 
list of glazes that I have collected/used at 
various workshops and at the Arts Council Studio 
where I teach classes and work on pottery.  As 
I said, most of these I have used or for some I 
have seen being used by instructors, or fellow 
potters.  As with all glaze formulas, be sure to
run tests to your kiln and situation.  I have no
idea who any original glaze originators are, or 
I would give them credit for their hard work.

After the glazes there will be some "fun things"
to do with clay followed by other useful
information.  

GLAZES for Cone 10 Reduction

BLUE GRANITE C 10 Colemanite 14 Spodumene 30 Ekp 5 Dolomite 7 Talc 13 Silica 20 Rutile 6 Manganese Diocide 1 Cobalt Carb 4 TEMMOKO (C10R) Whiting 10 Spodgumine 60 EPK 5 Silica 25 Red Iron Ox 10 110 COPPER BLUE MATT (C10R) Barium Carb 30 Kingman Seledon 60 Nepheline Syenite 5 EPK 5 Copper Carb 6 SEAGREEN C4-5 OX (10 R) Barium Carb 44 Lithium Carb 440 Gerstley Borate 3080 Custer Feldspar 2420 EPK 540 Silica 3080 Tin Oxide 650 Black Copper Oxide 350 (C10 R = Red, blue over Keatons) SEACREST PURPLE C6 POTASH FELDSPAR 537. WHITING 129. COLEMENITE 25. KOALIN 60. FLINT 224. ZINK OX 25. 3% Black Iron Oxide 3% Rutile SPODUMENE C10 Dolomite 2000 Pot Spar (potash) 3000 Kaolin (EKP) 2500 Whiting 500 6% Tin Oxide 600 3% Bentonite 300 = 5 gal. Shaner"s Red Custer Feld 4200 Talc 320 EPK 2000 Bone Ash 320 Whiting 1700 Iron 800 Shaner"s Orange Custer Feldspar 200 Talc 400 EPK 2500 LBone Ash 300 Whiting 2130 Red iron oxide 400 Rutile 440

SHINO C10 Soda Ash 290 580 Neph Sy 5450 10,900 Spodumene 2280 4,560 OM4 Ball Clay 1490 2,980 Bentonite 325 650

KEATON'S IRON SATURATE (C6-Brown) (C9-10=Blackish Red) Red Iron Oxide 800 Ball 900 Whiting 1,250 Flint(silica) 2,700 Custer Feldspar 3,600 F/4 (Soda) 500 EKP 250 Dolomite 200 Bentonite 408

ERICSON'S WHITE C6-10 (O/R) Soda Spar 540 Custer Spar 4500 Dolomite 1530 Whiting 480 EKP 250 Zink Oxide 450 Petalite 630 Ziropaz 1170 Bent 200 19500 (Sprinkle 1-2 tsp epson salts after made to keep suspended)

BLUE GRANITE C6-10 Colemanite 14 Spodumene 30 Ekp 5 Dolomite 7 Talc 13 Silica 20 Rutile 6 Manganese Diocide 1 Cobalt Carb 4

EGGSHELL C10 R Dolomite 18. Whiting 3. Custer Felspar 54. EPKaolin 2.5 Tin Oxide .5 100

COPPER GRAPE C10 R Barium Carb 5.10 Dolomite 5.10 Whiting 8.17 Gerstley Borate (Colmenite) 5.10 Custer Feldspar 51.02 Silica (20 mesh) 23.51 ADD: Copper Carb 2.04 Cobalt Carb 0.26 Tin Oxite 1.02 Zink Oxide 2.55

K COPPER RED C9-10 R Nem Sye 3500 Whiting 1600 Zinc Oxide 500 Barium 800 Flint (Silica) 2500 Tin Ox 400 Copper Carb 200 9500

KR COPPER RED C6-10 0/R Barium Carb 21.5 Borax 5.4 Soda Ash 1.1 Whiting 5.4 Cornwal Stone 7.5 Kona F4 Feldspar 37.6 Koalin 10.7 (not Edgar Plastic) Flint 10.8 100% Add: Tin Ox 2.2% Zink Ox 5.4% Copper CArb 7.5% Slightly soluble Red in reduction Grn in Ox Strong pastel green in c 8 ox

Tomato Red Soda 4050 Silica 2425 EPK 600 Nagnesium Carb 600 Bone Ash (pure) 975 Red iron oxide (pure) 600 Bentonite 185

Stony Whiting 300 Dolomite 1105 Talc 1135 Custer Fieldspar 2200 Neph Syenite 1385 OM4 Ball Clay 385 EPK 1465

Rutile Custer Feldspar 4600 Cornwall Stone 2200 Whiting 2000 EPK 1200 Rutile 800 Bentonite 300

Carlton Blue Potash Spar 4210 EPK 180 silica 2720 Whiting 260 Colemanite 880 Dolomite 880 Zink Oxide 170 Barium Carbide 440 Rutile 400 Copper Carbonate 50 Bentonite 300

Oxblood Gestley Borate 1347 Calcium Carbonate 1081 Custer Feldspar 934 Nepheline Syenite 4351 Epk 201 Silica 2086 Tin Oxide 102 Copper Oxide 31 Wood Ash 2533

Peacock Blue Frit (pemco 54) 1296 Custer Feldspar 1785 Whiting 288 Colemanite 2592 OM4 Ball Clay 1872 Silica 1296 Cobalt Oxide 64

Spotted Gold F4 2850 Albany Slip 1100 Ball Clay 100 Borax 50 Ferricchromare (Fe2O3) 50 Rutile ` 350 EPK 1500 Whiting 1700 Barium Carb 800

Glazes for Cone 5-8 Oxidation

BLACK (glossy glaze) C6(Tom Kerrigan's Reciepe) grams 500% Flint (silica) 4.8 24.00 Zink Oxide 4.9 24.50 Wollastanite 11.6 58.00 Koalin 9.0 45.00 Gerstly Borate (Colemenite) 9.0 45.00 Custer Feldspar (potash) 50.1 250.50 Manganese Dioxide 5.0 25.00 Cobalt Oxide 1.0 5.00 Red Iron Oxide 3.0 15,00 Notes : Use Rutile disolved in water and sponged or brushed under this glaze -- or 50% rutile and 50% Gerstley Borate --makes a good stain at C5-6

E170 DARK BLUE C5(Harding Black) grams 500% 1000% Custer Feldspar (potash) 30. 150. 300. Silica (flint) 31. 155. 310. Ball Clay OM4 13. 56. 130. Zink Oxide 3. 15. 30. Soda Ash 3. 15. 30. Barium Carb 6. 30. 60. Gerstley Borate (colemenite) 28. 140. 280. Cobalt Oxide .50 2.5 5.

E169 TURQUOISE C5(Harding Black) grams 1000% Potash 30. 300. Silica 31. 310 Ball Clay OM4 13. 130. Zink Oxide (calcine **) 3. 30. Soda Ash 3. 30. Barium Carb 6. 60. Gerstly Borate 28. 280. Copper Oxide 2. 20.

SEAGREEN C4-5 OX Barium Carb 44 Lithium Carb 440 Gerstley Borate 3080 Custer Feldspar 2420 EPK 540 Silica 3080 Tin Oxide 650 Black Copper Oxide 350 (C10 R = Red)

SEACREST PURPLE C6 POTASH FELDSPAR 537. WHITING 129. COLEMENITE 25. KOALIN 60. FLINT 224. ZINK OX 25. 3% Black Iron Oxide 3% Rutile

KEATON'S IRON SATURATE (C6-Brown) Red Iron Oxide 800 Ball 900 Whiting 1,250 Flint(silica) 2,700 Custer 3,600 F/4 (Soda) 500 EKP 250 Dolomite 200 10,200 Bentonite 408

EVERGREEN C-- Soda Feldspar 440 or Custer Feldspar (Turq) Silica 240 EKP 20 Colemenite 200 Whiting 10 Zink Oxide 30 Barium Carbonite 60 Copper Carb 30 Rutile 10

CHOY MATTE C5-6 Neph. Syenite 53.9 Whiting 11.6 Zink Oxide 10.3 EKP 17.9 Silica 1.5 Lithium Carb 4.7

NO BORON GLAZE C4 Barium Carbonate 6.67% Lithium Carbonate 11.11 Whiting 11.11 Edgar Plastic Koalin 24.67 100% Add: Zink Oxide 11.11

BLUE GRANITE C6 Colemanite 14 Spodumene 30 Ekp 5 Dolomite 7 Talc 13 Silica 20 Rutile 6 Manganese Diocide 1 Cobalt Carb 4

TRANSPARENT BLUE C-- Barium Carb 320 Talc 250 Whiting 770 Custer Feldspar 5140 EKP 640 OM4 Ball Clay 480 Silica 2400 Zinc Oxide 78 Cobalt Carb 50

AMETHYST Soda Feldspar 44 Silica 24 EKP 2 Colemanite 20 Whiting 1 Zinc Oxide 3 Barium Carb 6 Magnesium Dioxide 5 Rutile 1 Tin Oxide 5

HIGH BORON BASE (lowfire) Gerstley Borate 50 K-200 Spar 34 Flint 10 EKP 6 Clear thin, opal-y thick. Bright color response. Crazes thick. Best brushed on. Colorant suggestions: Blue 1% Cobalt Carbonate Turq. 2.5% Copper lCarbonate Amber 4% Manganese Dioxide

Rob"s Clear (lowfire) Gerstley Borate 55 EKP 37 Flint 10 Good all-purpose clear. Apply with a brush in thin layers. Will crack when drying if thick.

Glazes for RAKU

LIZARD SKIN for RAKU BORAX 9.0 GERSTLEY BORATE 64. PETALITE 27. COPPER CARB 4.5 CHROME OXIDE O.4 MAGANESE cARB 45.5 Ready to pull when slightly shiny. Can flake off pot in unfired state Can pop off pot when firing Separates into Tiny Lizard skin plates with unglazed lines between. Tends to mess up the kiln.

MATT RED RAKU GLAZE C8 Borax Pentahydrate 63.16% Colemanite 7.60 Lithium Carbonate 2.34 Spodumene 17.54 Frit 3278 (ferro) 9.36 100% Add: Tin Oxide 5.85% Titanium Dioxide 3.51% Zirconium Spinel 5.85% Copper lCarbonate 1.75%

VERSION #2 C08 BP 63.16 Gerstley Borate 16.96 Lithium Carb. 4.68 Spodu. 15.20 100%

RED RAKU Colemenite 40 g Borax 40 g Barium Carbonate 10 g Copper Carbonate 10 g

ARABIAN TURQUOISE (Raku) Frit 3134 80 g Kaolin 10 g Zink Oxide 10 g Copper Carbonate 2 g Bentonite 2 g

REYNOLDS WRAP (Raku) Colemanite 63 g Custer Feldspar 12 g Copper Carbonate 12 g Barium Carbonate 6 g Ball Clay 6 g Flint 6 g

COPPER BLUE (Raku) Frit 3134 45 g Colemanite 40 g Flint 7 g Kaolin 8 g Copper Carbonate 6 g

HAMADA GREEN (Raku) Colemanite 116 g Flint 4.2 g Copper Carbonate 6 g Frit 3110 3.6 b CRATERS OF THE MOON (Raku) Lithium Carbonate 30g Kaolin 10g Magnesium Carbonate 10g Flint 30g Bemtpmote 5g Borax 15g Copper LCarbonate 6g

CAREY'S COPPER PENNY (Raku) Colemanite 80g Cornwall Stone 20g Yellow Ochre 8g Black Copper Oxide 2g Cobalt Oxide 1g

JOHN'S BLUE (LOWFIRE) (Raku) fRIT 3110 76 (better with 3195 19 or 3110 57) Gerstley Borate `10 EKP 9 Flint 10 Alkaline glaze. May run where thick. Colorant Suggestions: John's Blue 5% Copper Carbonate Rude Blue 3% Cobalt lCarbonate

COPPER PENNY (RAKU) Colemanmite 80 Nepheline Syenite 20 Copper Carbonate 10

CRUSTY LUSTY Gerstley Borate 8 parts Bone Ash 2 parts Copper Carbonate 1/2 part Cobalt Oxite 1/4 part FERGUSON'S CHROME (RAKU) FRIT 3110 70 COLEMANITE 5 FLINT 10 DAOLIN 5 SODA ASH 10 COPPER CARBONATE 3

DORIS'S GOLD (RAKU) Colemanite 60 Nephline Syenite 25.5 Lithium Carbonate 10 Copper Carbonate 3 Manganese Dioxite 1.5

DON'T THROW IT OUT
REPAIR THAT POT

Do you ever need to repair a crack in a pot, or a
broken or chipped pot?  I'm talking wet, leather, 
bone, bisque, glazed---the whole run of the gauntlet.  
Well, I have recently been introduced to a product 
that does just that!  It is called "Slik-Fix"and is 
produced by Circle H Enterprises.  A local ceramics 
dealer who carries underglazes, low-fire glazes, etc. 
had some and told me, about it.  It really works.  
It's a real FIND!  

There are some potters, 
        I guess, somewhere, 
            who never 
                have a crack,
                  or broken, and 
                        always do things just right,
 
but that's not me. I learn the hard way and by 
watching others.  I have had some help along the way, 
but I believe the true art of pottery comes from within 
and from time and more time! A work of clay reflects the
spirit of the potter.

You asked for it---SO HERE IT IS!

FUN THINGS TO DO WITH CLAY

This is the place for "fun things" to do with clay.
Since I do teach children's classes during the summer,
those of you who teach the same age level might find a
new idea or two here.  I could use some of those myself.  
If you have one e-mail me your "Fun Idea" and I will post
it here to share with others!

The first FUN THING is what I call a rag box. It is a super easy project. Step 1: Take some clay that fits nicely in your hands and shape it into a ball. Step 2: Place the ball of clay in the center of a square of cloth large enough to have excess above the clay when it is covered. Step 3: Pull the excess cloth above the clay and twist the cloth tight. Step 4: Carefully set the clay ball covered by the twisted cloth somewhere to set and dry to leather hard. **DO SOMETHING ELSE FOR AN HOUR OR TWO--DEPENDING ON THE MOISTURE IN THE AIR! Step 5: Carefully take the cloth off the clay being sure not to disturb the design made by twisting the cloth. Step 6: Pull a wire through the top of the clay to form a lid. Make an irregular line with the wire and not just a streight pull. Step 7: Carve out the bottom part to form the box--being sure, not to disturb the lip so the lid will fit properly. Step 8: Carve a small amount from the lid part and place the lid on the box. Put small strips of paper between the lid and box so they will not stick. You can adjust them at this point to be sure they fit nicely. Step 9: Before it drys you can paint it with underglazes. Then let the pot dry so you can bisque, glaze, and fire. If you like this project feel free to make rag pots. I learned how to make a rag pot from a fellow student in Junction, Texas during a graduate class with James Watkins.

This is the place where eventually will appear my experience with the pit fire process. I have been in workshops and classes as well as trying some on my own. If you have never tried it, I reccommend the experience.

Let me hear from you if you are a fellow potter!



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