| Cone 5-6 Glazes (Electric
Kiln)
collated by Barbara Hanselmann
XAVIER’S WARM JADE GREEN
A food safe semi-matte, butter finish glaze
Talc…………………………
9.0%
Whiting……………………..
16.0%
Custer Feldspar…………….. 40.0%
3124 Ferro Frit……………… 9.0%
EPK…………………………
10.0%
ADD:
Copper Carbonate……………. 4.0%
Rutile…………………………
6.0%
Brushing Medium…………… 1.8% [add only
if brushing on]
You can vary the Copper Carbonate from 3-5% with great results
and still
be food safe.
SAFFIRE BLUE
A Ron Roy recipe which breaks nicely on edges. Breaks green on light
clay bodies, black on dark clay bodies. Apply medium to heavy.
Frit 3134.………………………
.37.0%
EPK……….…………………….26.0%
Silica 325.………………………17.0%
Strontium Carbonate…………… 4.0%
Custer Feldspar ……………….. 16.0%
ADD:
Cobalt Carbonate……………… 2.5%
Rutile…………………………..
4.5%
Bentonite…………….…………
2.0%
Brushing Medium……………… 1.8% [add
only if brushing on]
CURRIE BLUE
A butter finish matte which has a lot of interest, breaks
nicely and holds it’s own on all clay bodies. Very opaque.
Ferro Frit 3134.………………………..
10.0%
Nepheline Syenite…………………….
65.0%
Strontium Carbonate………………….
23.0%
Lithium Carbonate…………………….
2.0%
ADD:
Copper Carbonate……….…………….
4.0%
Cobalt Carbonate………………………
0.15%
Bentonite……………………………….
2.0%
Brushing Medium………………………
1.8% [add only if brushing on]
BACH’S BLUE GREEN
A glossy semi-transparent glaze which holds on even the darkest
clay bodies. Overlays well with Randy’s Red; great over blue,
green & red oxide stains.
G200 Feldspar…………………………
27.00%
Silica 325 [flint]……………………….
20.25% Whiting………………………………..
20.25%
Ball Clay [OM4]………………………
10.25%
Gerstley Borate…………………………
9.00% Zinc
Oxide………….………………….
6.75%
Soda Ash……………………………….
6.50%
ADD:
Zircopax………………………………..
6.00%
Copper Carbonate………………………
6.00%
Bentonite……………….……………...
2.00%
Brushing Medium……………………..
1.80% [add only if brushing on]
WEATHERED BLUE
A true weathered looking glaze from Pete Pinnell.
Nepheline Syenite………………………
40.0%
Dolomite……………………………….
18.0%
Silica 325.……………………………...
18.0%
EPK……………………………….........
12.0%
Bone Ash………………………………...
6.0%
Lithium Carbonate……………………….
4.0%
ADD:
Zinc Oxide……………………………….
4.0%
Copper Carbonate……………………….
2.0%
Cobalt Carbonate………………………
0.25%
Bentonite……………………………….
2.0%
Brushing Medium………………………
1.2% [add only if brushing]
LYNN’S GLOSSY GREY & LIGHT BLUE GREEN
A glossy glaze with a lot of movement. Looks best on textured surfaces
or over engobes with red iron and red iron oxide stains.
Gerstley Borate…………………
50.0%
Silica 325.………………………
30.0%
EPK……………………………..
15.0%
Titanium Dioxide……………….. 5.0%
For GLOSSY GREY ADD:
Copper Carbonate…………….2.0%
Copper Carbonate…….………….. 2.0%
Red Iron Oxide……………………
1.0% Cobalt Carbonate…………………0.75%
For BLUE GREEN ADD:
Soda Ash……….…………………
2.5%
STRONTIUM WEATHERED BRONZE AND WASHED DENIM BLUE
A great weathered-looking glaze. The bronze goes from a clear, bright
green to a brownish bruised green and is suited to all clay body
colors, although it is best on tans. The denim blue is not tested.
Lithium Carbonate……………… 1.0%
Strontium Carbonate…………….20.0%
Nepheline Syenite……………….60.0%
KYOM 4.…….…………………10.0%
Silica 325.………………………
9.0%
FOR WEATHERED BRONZE ADD:
Cobalt carbonate……………..0.15%
Copper Copper Carbonate…………….4.0%
Bentonite……………………..2.0%
Brushing Medium……………….1.8%
FOR WASHED DENIM BLUE ADD:
Titanium Dioxide………………. 5.0%
Carbonate……………… 5.0%
Bentonite………………………..
2.0%
Brushing Medium…………….1.8%
STRONTIUM TURQUOISE MATTE Cone 5
The ingredients in this glaze are the same as the ones in Strontium
Weathered Bronze; only the amounts vary slightly. A beautiful matte
turquoise glaze!
epheline Syenite…………………….60%
Strontium Carbonate………………….25%
Lithium Carbonate…………………….
2%
EPK………………………………........4%
Silica 325.……………………………..9%
ADD:
Copper Carbonate…………………...4.0%
Bentonite…………………………….2.0%
Brushing Medium……………………1.8%
TECO GREEN -
A Tom Zwierlein matte glaze based on a Val Cushing recipe. Reminiscent
of the green to grey glaze found on American Art Pottery known as
Tecoesque. Really greys out to an ugly color on white stoneware
if applied too thick but holds it’s own on other clay bodies
[from tans to reds to browns] producing different, interesting effects.
F4 Kona Feldspar………………51.0%
Whiting…………………………19.0%
EPK……………………………..15.0%
Zinc Oxide………………………
9.0%
Silica 325.….……………………
6.0%
ADD:
Tin Oxide……………………….
6.0%
Black Copper Oxide…………… 4.0%
Red Iron Oxide…………………..0.5%
Bentonite……………….….…….
2.0%
Brushing Medium………………. 1.8%
METALLIC GREEN -
This metallic luster glaze looks awesome on clays with iron - Laguna’s
Electric Brown, Hawaiian and Standard’s 266 Brown or over
engobes or stains made from red iron oxide. Both the Sky Blue and
Ocean variations also produce metallic lusters and look best on
iron rich clays, stains and engobes. Three brushed-on coats really
cover well; if more translucency is desired, one heavy or two lighter
coats do the trick.
BASIC RECIPE
Frit 3269.……………………….27.0%
Laguna Borate…………………15.0%
Spodumene……………………..40.0%
EPK…………………………….18.0%
ADD:
Bentonite………………………..
2.0%
Brushing Medium……………….1.8% [add
if brushing]
METALLIC GREEN -
ADD Colorants:
Tin Oxide………………………
6.8%
Copper Carbonate……………… 4.8%
Using the basic recipe for Metallic Green above but changing colorants
will give you these recipes
METALLIC SKY BLUE - METALLIC
OCEAN-
ADD Colorants: ADD Colorants:
Tin Oxide…………………………6.8%
Tin Oxide…………………………..7.0%
Copper Carbonate……………….. 3.0%
Copper
Carbonate……….…………. 4.0%
Cobalt Carbonate…………………1.5%
Cobalt Carbonate…………………..
1.0%
RANDY’S RED & BLUE - a
A glossy, translucent glaze which works better as a liner or “inside”
glaze. The red goes very orange if re-introduced to a bisque firing
after a cone 5-6 firing. The blue is very lavender with specs from
the cobalt oxide. Apply medium to heavy, especially outside. Can
be runny.
Gerstley Borate ……………….. .31.0%
Kona F4.……………………….
.20.0%
Talc…………………………….
.14.0%
Silica 325.………………………30.0%
EPK……………………………..
5.0%
Bentonite………………………..
2.0%
Brushing Medium………………. 1.2%
[add only if brushing]
For RED ADD:
Red Iron Oxide………………….15.0%
For BLUE ADD:
Cobalt Oxide……………………
1.2%
RANDY’S RED REDUX - LANA WILSON - untested
Laguna Borate……………………34.54%
Kona F-4 Soda Feldspar………….18.28%
Talc………….………….…….......15.68%
Silica 325.………………………...30.74%
Red Iron Oxide…………………....15.0%
Bentonite……………….….….….....1.0%
FROSTY CRYSTAL -
A Toni Smith recipe good from cone 5-8. It’s a great bottom
glaze for layering transparent specialty glazes like Blue Hare’s
Fur. An eggshell finish natural white.
Nepheline Syenite………………40.0%
Whiting…………………………
9.5%
ADD:
Zinc Oxide……………………..17.1%
Rutile……………………..2.0%
Silica 325.……………………..
28.6%
Bentonite………………….3.0%
EPK……………………………
4.8%
Brushing Medium……….. 1.8%
METALLIC BLACK -
Lana Wilson’s cone 6 oxidation glaze. Not tested.
Flint [Silica325]…………………..25%
Spodumene………………………50%
Gerstley or Colemanite…………..25%
ADD:
Bentonite………………………….2.0%
Red Iron Oxide……………………3.0%
Cobalt Oxide………………………3.0%
Copper Carbonate…………………4.0%
JACK’S EGGSHELL MATTE
A nice eggshell for cone 5-6 which can be colored with 0.5%Cobalt
Carbonate to make Periwinkle Blue. Not tested.
Custer Feldspar…………………..47.0%
EPK………………………………19.0%
Whiting……………………………14.0%
Dolomite………………………….10.0%
Gerstley Borate………….………..10.0%
BLACK GOLD MATTE
A great bronze black metallic for all clay bodies at cone 5-6; apply
medium.
Redart………………………….
49.0%
Manganese Dioxide……………36.5% OM4
Ball Clay………………… 4.0%
Silica 325 [flint]……………….. 4.0%
Black Copper Oxide…………… 4.0%
Cobalt Oxide……………………
2.5%
Bentonite………………………..
2.0%
Brushing Medium……………… 1.8%
( This is my favorite of the golden bronze looking glazes!)
BRONZE -
Bill Shillalie’s version for cone 02-6. This recipe is so
similar to my favorite above that I decided to hold on to it and
test it one of these days. The other two are more options.
Red Art…………………………..46.0%
Manganese Dioxide…………….35.0%
OM4 Ball Clay………………… 4.0%
Silica 325.………………………
4.0%
Black Copper Oxide…………… 4.0%
Cobalt Oxide……………………
2.0%
Red Iron Oxide…………………
2.0%
Dark Rutile………………………3.0%
BRONZE 2
Red Art …………………………..48.0%
KYOM4 Ball Clay……………… 4.0%
Silica
325.…………………………
5.0%
Manganese Dioxide….…………….45.0%
Gerstley or Laguna Borate…………30.0% [Used
by Virginia Scotchie]
Cobalt Carbonate………………….
5.0%
BRONZE 3
Red Art…………………………….60.0%
KYOM4 Ball Clay……………… 5.0%
Silica 325.……………….………
4.0%
Manganese Dioxide…………….. 36.0%
Gerstley or Laguna Borate……… 8.0%
Copper Carbonate…………………
5.0%
CARIBBEAN BLUE - A zinc semi-matte glaze from Mastering Cone 6
Glazes by Ron Roy & John Hesselberth. This glaze is formulated
to be green but I got
a great blue, no where near a green. When I spoke with Ron, he said
to increase the Rutile to 8, even 10% and I should get green - it
worked!
Nepheline Syenite…………………36.0%
Wollastonite……………………….13.0%
Zinc Oxide………………….….….10.0%
EPK……….……………………....
10.0%
Silica 325.…………………………31.0%
ADD Colorants:
Cobalt Carbonate………………….
1.0%
Rutile…………………….………..
6.0% [ 8% if the Rutile is light]
Brushing Medium………………….1.8%
[add if brushing]
LICHEN GLAZES-
Two variations made to be used over a dark engobe to give a white
cracked finish. These can be colored with stains, fire between 4
- 9 [going a smooth mat at 9] and are often referred to as CRACKED
MUD SURFACES. The second gives smaller more shiny crackles.
RECIPE I
Kona F4 Feldspar……………….35.0%
Magnesium Carbonate…………..30.0%
Ferro Frit 3195.………………….
6.0%
Talc………………………………...15.0%
Zinc Oxide……………………….6.0%
EPK………………………………..15.0%
RECIPE II
Kona F4 Feldspar…………………..30.0%
Magnesium Carbonate…………….. 25.0%
Cadycal 100 [a Gerstley sub]………10.0%
Talc………………………………8.0%
EPK……………………………
19.0%
RUTILE GREEN -
Modified from a Ron Roy base glaze by Bill van Gilder. Not tested.
Custer Feldspar…………………22.0%
Whiting…………………………
4.0%
Talc……………………………..
5.0%
EPK…………………………….17.0%
Silica 325.………………………26.0%
Frit 3134.……………………….26.0%
ADD:
Bentonite………………………..
2.0%
Rutile……………………………
6.0%
Copper Carbonate……………….4.0%
SINGLE FIRE ASH GLAZE - CONE 6
Mary Berringer Not tested.
Wood Ash…………………………19%
Potash Feldspar……………………25%
Kaolin……………………………..12%
Red Clay [Red Art]……………….13%
Silica 325.…………………………31%
ADD:
Cobalt Carbonate…………………1-5%
Red Iron Oxide……………………
15%
BURLINGTON BASE GLAZE - Cone 6
Mary Berringer Not tested.
Lithium Carbonate…………………2.0%
Strontium Carbonate………………5.4%
Whiting…………………………..12.2%
Soda Feldspar……………………20.4%
Albany Slip………………………22.4%
Ball Clay…………………………25.4%
Zircopax…………….…………
12.2%
Color variations are achieved with oxides and/or stain additions
SHEEN-O-GLAZE Cone 6
Mary Berringer Not tested.
Soda Ash…………………………..2.9%
Gerstley Borate……………………4.9%
Spodumene………………………22.8%
Nepheline Syenite………………..54.5%
Ball Clay…………………………14.9%
ADD:
Chrome……………………………0.5%
REDART GLAZE Cone 4-6
The base alone is a smooth toffee color matte.
Not tested. G200.…………….……….….........20%
Redart………………….………….18%
Gerstley Borate.……………………18%
Whiting……………………………15%
EPK………………………………..10%
Silica
325.………………………….10%
Zinc Oxide………………………….9%
ADD FOR DEEP GREEN:
Copper Carbonate…………………..4%
ADD FOR AMBER:
Red Iron Oxide……………………..4%
THE GLAZES WHICH FOLLOW ARE FROM “THE CERAMIC SPECTRUM”
BY ROBIN HOPPER
and credited as he did or did not in the book
CLEAR GLAZE Cone 5-6
The BEST!!.. no crazing, no running, no clouding. Not tested.
Nepheline Syenite….……………….30%
Gerstley Borate……………………..21%
EPK………………………………....10%
Wollanstonite………………………..8%
Silica 325.…………………………..31%
RUDOLPH STAFFEL’S OPALESCENT Cone 5-6
Not tested.
Custer Feldspar……………………..40.5%
Whiting……………………………..13.5%
Zinc Oxide……………….…………
7.5%
EPK………………………………....7.5%
Silica 325.……………………………22%
Gerstley Borate……………………….9%
VINCE PITELKA’S SMOOTH MATTE CLEAR GLAZE Cone 5-8
Good over stains and engobes to give depth of color - apply lightly!
Not tested.
Dolomite………………………………18%
Whiting………………………………...4%
Nepheline Syenite……………………..17%
Custer Feldspar………………………..40%
Ball Clay - Tenn 10% or OM4.………….11%
EPK………………………………........10%
SHINY TRANSPARENT ZINC CLEAR Cone 6
Not tested.
Custer Feldspar……………………….40%
Silica 325.…………………………….15%
EPK………………………………......15%
*Cadycal 100.…….…………………..10%
Calcium Carbonate…………………..10%
Zinc Oxide…………………….……..10%
GLOSSY FOOD SAFE BASE GLAZE Cone 5-6
Very smooth and shiny; responsive to additions of iron, cobalt or
copper. Not tested.
Nepheline Syenite…………………….36%
Dolomite………………………………18%
*Cadycal 100.………………………….10%
EPK……………………………….......18%
Silica 325.……………………………..18%
HIGH GLOSS FOOD SAFE CLEAR GLAZE WITH ZINC Cone 5-6
Not tested.
Nepheline Syenite.……………………25%
Ferro Frit 3124.……………………….25%
*Cadycal 100.……….……….….….....20%
EPK……………………………….......10%
Silica 325.……………………………..10%
Zinc Oxide……….……………………
5%
*CADYCAL 100 is another Gerstley Borate replacement and is available
from
certain distributors. This is the last glaze recipe from Robin Hopper
BRUTUS BASE Cone 5-6
A muddy ochre on tan bodies, not real interesting.
Albany Slip……………………………43%
Wollanstonite…………………………38%
Whiting……………………………….15%
Lithium Carbonate………….…………2%
Bone
Ash……………….……………..2%
FOR ORANGE ADD: Red Iron Oxide……………………….3.0%
Rutile……………………………….....1.0%
MOST OF THE FOLLOWING GLAZES HAVE NOT BEEN TESTED ON MY CLAY BODIES.
PERKIN’S MATTE BLACK
A matte gunmetal black which stays put - great for wax resist design
work. This glaze works on all clay bodies but tends to pinhole if
too thick.
Nepheline Syenite………………76.3%
EPK…………………………….
4.8%
Whiting…………………………
5.3%
Gerstley Borate………………….10.4%
ADD Colorants:
Copper Carbonate……………… 4.0%
Manganese Dioxide……………. 4.0%
Cobalt Oxide……………………
2.0%
ADD:
Bentonite………………………..
2.0%
Brushing Medium……………… 1.2%
METALLIC GUNMETAL BLACK
A variation on the Perkins Matte Black above
Potash Feldspar.….……………….79.0%
EPK……………………………….
5.0%
Whiting…………………….……..5.0%
Gerstley Borate……………….…..11.0%
ADD:
Copper Carbonate…………………4.0%
Manganese Dioxide……………….4.0%
Cobalt Carbonate………………….2.0%
ADD:
Bentonite…………………………..2.0%
Brushing Medium…………………1.2%
LANA WILSON’S SATIN PURPLE
The Best cone 5-6 purple around!
Custer Feldspar…………………..26.66%
Gerstley Borate……………………8.32%
Silica 325.……….……………….32.28%
Bentonite…………………………..2.0%
Whiting……………………………11.87%
Nepheline Syenite…………………14.17%
Magnesium Carbonate………………1.6%
Lithium Carbonate…………………..3.6%
Cobalt Carbonate……………………0.6%
Tin Oxide……………………………4.8%
Chrome.…………….…………….....0.17%
P C A CELADON - MLAC
Flint - Silica 325..…………………21%
Kona F-4 Soda Spar………………35%
EPK……………………………….10%
Barium Carbonate…………….……8%
Whiting…………………………….8%
Gerstley Borate…………………….18%
Tin Oxide………………….…….….5%
Rutile……………………………….2%
Copper Carbonate……………..……1%
BLUE GREEN CELADON - MLAC
Nepheline Syenite………………….30%
Gerstley Borate…………………….27%
Whiting……………………………..8%
EPK………………………………....8%
Silica 325.…………………………..35%
Bentonite………………….…………1%
Copper Carbonate…………………..1.36%
Cobalt Carbonate….………………0.068%
BARBARA’S GREEN - MLAC
Kona F-4 Soda spar………………….46.7%
Silica 325.……………………………28.0%
Gerstley Borate………………………13.5%
Whiting……………………………….8.2%
Dolomite………………………………5.9%
Zinc Oxide…………………………….3.9%
EPK……………………………….......2.7%
A very pale semi-transparent green:
Copper Carbonate……….…0.5%
Rutile………………………5.0%
Bentonite………………….2.0%
FAUX CELADON #1
Cone 6 oxidation
Kona F-4 soda spar……………………...50%
Wollastonite.………………………….…20%
China Clay [EPK]……………….…….…10%
Silica 325.……………………………......10%
Gerstley Borate…………………………..10%
Copper Carbonate……….………………0.5%
Black Stain 6600 Mason………………..0.2%
Copper Carbonate………………….2%
FAUX CELADON #2
Cone 6 oxidation
Nepheline Syenite……………..….40%
Dolomite……………………….…18%
Flint - Silica 325.…………………18%
EPK……………………………….12%
Bone Ash.………………………….6%
Lithium Carbonate…………………2%
Zinc Oxide…………………………4%
FAUX CELADON #3
Cone 6 oxidation
Nepheline Syenite………………………47.3%
Gerstley Borate…………………………27.0%
Silica 325.……………………………....20.3%
EPK………………………………..........5.4%
Red Iron Oxide………………………….2.0%
Cobalt Oxide……………………………1.0%
Rotile………………………….…...........4.0%
Bentonite………………………………..2.0%
GREEN MATTE
Cone 5 oxidation
Nepheline Syenite…………………….….40%
Wollastonite……………………………...25%
Spodumene…………………………….…12%
EPK………………………………............12%
Silica 325.…………………………….......11%
Copper Carbonate………………………....
4%
Bentonite………………………….….........
2%
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