DJofTexas
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Joined: 29 Nov 2007
Posts: 82
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 Posted: Sat Jan 26, 2008 2:28 am Post subject: BUBBA'S SECRET SAUCE AND OTHER AMAZING RAKU GLAZES |
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http://www.aug.edu/~artpxh/Class%20files/Ceramics/RakuGlazeList.pdf
Augusta State University GLAZE LIST (HOLLINGSWORTH/CERAMICS)
last revised: January 9, 2007
RAKU GLAZES
Higby Water Blue
70 frit 31 1 0
5 gerstley borate
5 flint
5 EPK
----------------------------------------------
85
Add copper carbonate 3-6%. A blue-turquoise glaze that reduces to
copper penny. For lime green color increase copper to 8%.
Seth Blue Luster
2000 gerstley borate
500 nepheline syenite
31 tin oxide
250 copper carbonate
125 cobalt carbonate
----------------------------------------------
2906
Rick's Turquoise
982 gerstley borate
495 nepheline syenite
505 spodumene
515 lithium
477 zircopax
65 copper carbonate
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3039
Add 2% bentonite to this batch. A delicate turquoise color with
eggshell texture. Delicate copper reduction effects.
Crimson Glaze
80 gerstley borate
20 nepheline syenite
5 kaolin
10 zircopax
----------------------------------------------
115
Add 15% crimson stain. Use this glaze for accents. It has no reduction effects - it's pink no matter
what. Firing it too high can cause the pink to burn to white in spots.
Mottled Brown
80 gerstley borate
20 nepheline syenite
5 kaolin
----------------------------------------------
105
Add copper carbonate 5%.
Add red iron oxide 10%
Also known as "Green/Red Glaze." Depending on reduction treatment, this glaze shows a variety of color effects.
Sunday Copper Matte
90 copper carbonate
10 frit 3110
----------------------------------------------
100
Add 3% bentonite.
A dry surface with the full range of iridescent colors.
Robert Bazemore's Sunday Copper Matte Variations:
1) Bubba's Secret Sauce: One layer of Sunday Copper Matte over one layer of Mottled Brown. Result: reds & oranges with cracking of glaze.
2) Bubba's Secret Sauce, Cajun Style: One layer of Mottled Brown over one layer of Sunday Copper Matte. Result: Strong yellows with reds and oranges.
3) The Flying Toe-Hold: First, a layer of Rick's Turquoise, then a layer of Mottled Brown, then last a layer of Sunday Copper Matte. Thin layers are best! Result: reds, oranges, greens, some silver.
For all of Robert's variations, use heavy postfiring reduction.
Clear Glaze
80 gerstley borate
20 G-200 feldspar
----------------------------------------------
100
Turquoise Crackle Raku
80 gerstley borate
20 titanium dioxide
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100
Add 4% copper carbonate
CRM-3 (Crusty & Iridescent)
PARTS BY WEIGHT
8 gerstley borate
2 bone ash
1/4 cobalt carbonate
1/2 copper carbonate
----------------------------------------------
10 ¾ parts
Iridescent, matt, luster effects. A crusty blue glaze with iridescent
patina. Good layered over shiny glazes or used alone.
Sam's Bubble Gum Glaze
80 gerstley borate
15 G-200 feldspar
5 whiting
5 zircopax
----------------------------------------------
105
Add 12% mulberry stain.
This glaze is best if fired in its lower ranges, just after the bubbles clear in the raku kiln - then it's a satin matt shading from soft gray-blue to flashes of purple-pink. If fired higher, it turns into a mottled burgundy gloss - fine, but not as exciting.
Alligator Crawl
2500 gerstley borate
1250 bone ash
625 nepheline syenite
625 copper carbonate
535 tin oxide
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5535
A very dry glaze.
Turquoise Alkaline Matt
55 nepheline syenite
26 barium carbonate
2 lithium carbonate
7 flint
6 china clay
4 copper carbonate
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100
A very dry matt surface, turquoise when completely oxidized. Reduces very easily (spots of yellow, burgundy, and black).
Copper Zuppo
45.0 gerstley borate
11.0 nepheline syenite
16.5 EPK
27.5 borax
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100
Add copper carbonate 10%. Remove from the kiln quickly and reduce thoroughly - yields amazing satin matt luster effects.
Glass Bead Raku
50 gerstley borate
40 borax
10 flint
50 magnesium carbonate
10 zircopax
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160
White Crackle Raku
80 gerstley borate
20 G-200
5 EPK
10 Zircopax
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115
Metallic Red Raku
50 borax
50 gerstley borate
5 copper carbonate
10 red iron oxide
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115
Tomato Red Raku
50 borax
50 gerstley borate
20 copper carbonate
5 iron oxide
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125
Kansas City Red Raku
50 borax
50 gerstley borate
10 copper carbonate
50 rutile
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160
Lizard Skin Raku
10 borax
15 lithium
70 gerstley borate
20 nepheline syenite
40 magnesium carbonate
5 copper carbonate
.4 chrome
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160.4
Darwin Raku
2500 gerstley borate
2500 3134
255 tin oxide
322.5 copper carbonate
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5577.5
Flaming Moondrops Raku
20 lithium
40 magnesium carbonate
70 gerstley borate
6 copper carbonate
.30 chrome
----------------------------------------------
136.30
-apply thickly-
Hawaiian Copper Blue Raku
20 bone ash
80 gerstley borate
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100
Add 1.3% tin oxide
5.0% copper carbonate
2.5% cobalt oxide
This glaze is on the matte side.
Craters of the Moon Raku
50 lithium carbonate
20 kaolin
20 magnesium carbonate
60 flint
10 bentonite
30 borax
12 copper carbonate
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202
Lots of iridescence, sort of shiny.
Earthmother Raku
30 lithium carbonate
30 gerstley borate
20 silica
10 ball clay
10 talc
----------------------------------------------
100
Add: 1% cobalt carbonate
3% copper carbonate
1% manganese dioxide
Shiny glaze, brown base with red flashes.
Red Hot Raku
50 nepheline syenite
30 frit 3819
4 tin oxide
1 black copper oxide
----------------------------------------------
84
Near-matte surface, dull red in color.
Ocean Oil Texture Raku
30 lithium carbonate
40 gerstley borate
10 kaolin
20 borax
6 copper carbonate
40 whiting
----------------------------------------------
146
Weiser Rust - raku
5.5 gerstley borate
1.25 nepheline syenite
1.875 copper carbonate
.5 nickel oxide
.5 tin oxide
----------------------------------------------
9.625
These are parts by VOLUME. The author of the recipe suggests using a cup as the unit of measure. Note that 1.875 is 1 cup plus 7/8 of another cup.
Black Raku
3.22 borax
43.01 gerstley borate
21.51 soda ash
10.75 nepheline syenite
21.51 barnard clay
----------------------------------------------
100.00
Add: 4.30% cobalt carbonate
2.15% copper carbonate
'Shroom Brown raku
85 frit 3110
7.5 ball clay
7.5 calcium carbonate
----------------------------------------------
100.0
Add: 1.5% copper oxide
6% iron oxide
Mary Jane Blue raku
85 frit 3110
7.5 ball clay
7.5 calcium carbonate
----------------------------------------------
100.0
Add 5% cobalt oxide
5% tin oxide
Honey Yellow raku
55 gerstley borate
30 EPK
5 flint
5 zircopax
1 manganese dioxide
2 vanadium pentoxide
----------------------------------------------
98
Wally’s Slip raku
50 Hawthorne Bond
30 EPK
20 Silica
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100
Wally’s Glaze Layer raku
35 gerstley borate
65 frit 3110
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100
The two Wally’s recipes are used together. Put the slip on pre-bisqued piece, then apply glaze. Fire in raku kiln until the glaze looks pebbly rather than molten. Take the piece out and smoke it (post-fire reduction in combustible material). Submerge the piece in water while it is still fairly hot, or spray water on a hot pot. This should make the slip/glaze combo crack off, revealing smoked crack lines on a smooth piece |
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