Oxidation
Glazes, Cone 6 -7
Albertus Magnus College
Wooster Craft Center Glazes Cone 5-6
Thanks to Robin McAlister, director for sharing these
Kiln Wash
Alumina Hydrate 35% 290
Kaolin (EPK) 25% 205
Bentonite 1% 8
David Franks "Refurbishing" Kiln Wash
1 cup kaolin
1 cup ball clay
1cup flint
1 cup fine grog
Water
OR
1 cup kaolin
1 cup ball clay
1 cup fine grog
Water
Forest Green
Gerstley Borate 49 1470 2940 3920
EPK 19
570 1140 1520
Flint 32
960 1920 2560
Total 100
3000 6000 8000
Soda Ash 0.2
6 12 16
Chrome 2
60 120
160
Cobalt Carbonate 1 30 60
80
Bentonite 2 60
120 160
Notes: Use chromium oxide for chrome.
Glaze is a glossy deep green color.
Can use 5% zircopax for a white.
Flick Ketchup
Gerstley Borate 32
Talc 14
Flint 30
Kona F4 20
EPK 4
Total 100
Red Iron Oxide 15
Bentonite 2
Notes: Satin matte, rich reddish brown.
Breaking Out Red
Gerstley Borate 55
Talc 15
Flint 30
Total 100
Red Iron Oxide 22
Bentonite 2
Notes: Color variations with carved or textured surfaces.
Schefflin Yellow
Gerstley Borate 50
EPK 15
Flint 35
Total 100
Dark Rutile 15
Notes: Creamy yellow.
Holly's Gold
Frit 3134 20
Dolomite 20
Spodumene 20
Ball Clay 20
Flint 20
Total: 100
Tin Oxide 3
Red Iron Oxide 2
Bentonite 2
Notes: Satin light gold color; very thin application turns rusty brown
while heavy application turns a mustard gold.
Schefflin Blue
Gerstley Borate 50
EPK 15
Flint 35
Total: 100
Cobalt Oxide 2
Red Iron Oxide 3
Notes: Glossy navy blue. Works well with Sarah's Folly.
Sarah's Folly
Gerstley Borate 7.5
Talc 5.4
Dolomite 3.3
Kona F4 16.6
Nepheline Syenite 32.9
Whiting 7.1
Zinc Oxide 6.6
EPK 12.5
Flint 8
Cobalt Oxide* 2
or
Cobalt Carbonate** 2
Bentonite 2
Notes: *Using cobalt oxide will give a deep blue-purple
**Using cobalt carbonate will give a pinkish-purple
Blue Green Matte
Ferro Frit 3195 20
Wollastonite 29
Neph Sy 4
EPK 30
Silica 17
Total 100
Rutile 6
Copper carbonate 3
Cobalt carbonate 1.5
Faux Celadon
Kona F4 41
Flint 19
Superpax* 11
Gerstley Borate 11
Whiting 7
Dolomite 5
Zinc Oxide 2
Tenn Ball Clay 1
Bentonite 2
Total 99
Copper Carbonate 2.5
Notes: *Superpax replaces zircopax. Superpax is stronger so
use 1% less, so the recipe was altered to reflect that difference.
Originally the recipe called for 12% zircopax.
Cornwall Stone
Custer Feldspar 43.7
Cornwall Stone 21.7
Whiting 17.7
Zinc Oxide 7.5
EPK 4.2
Titanium Dioxide 4.2
Bentonite 1.4
Total 100.4
Notes: Works well with most other glazes. Using Kona F4 makes
the glaze matte opaque white.
Other Glazes
Cone 7 Stoney White/Orange Bone Ash Glaze
G-200 390
Dolomite 300
EPK Kaolin
260
Bone Ash 50
Best over Iron bearing clay body.. Thick application is white, thinnest application
is near the base. Richest brown areas have more iron spray. Mesa Community
College., James Jacobs
Temoku -- cone 6-7
feldspar 432
silica 260
whiting 210
kaolin 100
red iron oxide 200
bentonite 38
Mesa Community College., James Jacobs
Shino -- cone 6
nepheline syenite 545
spodumene 228
ball clay 149
gerstley borate 49
soda ash 29
Mesa Community College., James Jacobs
LEACH YELLOW SETO - CONE 6 OXIDATION
woodash 50
ochre 25
custer Feldspar 25
Keep glaze thin or you will be scraping shelves. Becomes transparent yellowish brown and very fluid when thickly applied. The mid way thin/thick of application is mottled like a salt fired piece and is satin matte. But I got great reds, yellows, browns, blacks on pieces where it's thinner. To make tiny rivers of ash I make the same glaze substituting Red Art for the Ochre and trail it on with a slip trail bulb. Caution: use rubber gloves with unwashed ash glazes or face the possibility of contact dermatitis.
Metallic black, cone 6 ox
spodumene 50
gerst. bor 25
flint 25
black iron ox 10
cobalt ox
2
copper carb 4
This is a gorgeous black with mottled silver effects. Tends to run at cone
6. Make sure you have a good foot on the piece.
Floating blue cone 6 ox.
neph sye 47.3
gerstely borate 27.
silica 20.3
kaolin 5.4
red iron ox
2
cobatl carb
1
rutile 4
bentonite 2
This glaze has been around the bend a few million times, must have been
posted here on clayart many times. Its a glossy tan background with lots
of blue
floating. It's an absolutely reliable glaze, doesn't run, pinhole etc. you
can't go wrong with it.
VC "71"
Custer Spar 40
frit 3124 9
whiting 16
talc 9
epk 10
flint 16
Val's comments: wonderful surface. Really sensuous smooth satin matt. Kas
a kind of glow like looking at a pearl. All the colors keep this same
character, a gorgeous base glaze.
" a reliable cone 6 calcium matte glaze"
Wollastonite 34.0
Ferro Frit 3134 21.0
Kaolin 45.0
Glossy Mossy Flossy
Cone: 6 Color: White, brown specks
Firing: Oxidation Surface: Not quite glossy
Amount Ingredient
400 Nepheline Syenite
300 Silica
100 Whiting
300 Gillespie Borate
200 Kaolin--EPK
100 Spodumene--Gwalia
1400 Total
Additives
100 Tin Oxide
11 Iron Oxide--Red
Suspends better with 1% Bentonite
Rutile Mat, cone 6, ox.
20 Whiting
56 Neph. Syenite
18 Kaolin
6 Silica
ADD
7 Rutile
9 Zinc. Ox.
Glaze test for Silky White, cone 6, ox.
48 Neph. Syenite
25 Silica
18 Whiting
8 Zinc
8 EPK Kaolin
4 Tin Oxide
=========== 111 gr.
Semi gloss, soft white glaze, even and covering. Regards from Alisa in Denmark
Cone: 5-6 Finish: Tenmoku Atmosphere: Neutral
China Clay 5.0
Nepheline Syenite 21.0
Silica 40.0
Unwashed Ash 8.0
Whiting 11.0
Red Iron Oxide 15.0
Bentonite 2.0
Since publication of the book we have continued to fine tune our firing/cooling cycle to get the results we personally like. Our current cycle (which will continue to evolve) is:
http://www.masteringglazes.com/Pages/faqframe.html
Hello!
Just writing everybody that here in Brazil, Lana Wilson's red thrived in my
eletric kiln.I applied it thick and used John Hesselberth's firing profile
(www.frongpondpottery.com) but cooling rate of -125 per hour from 2190oF
down to 1500oF, then let it cool naturally. I got a wonderfull glossy wine
red!!!
I will try and load pictures as soon as I can.
Thank you again for glaze gurus everywhere. I am excited to test other
glazes.
Heloisa Nunes
Sao Paulo, Brazil
I call it Post's 244
It is a cone 6 glaze fired with a slow cool.
It feels great on both the dark body and the light body I have tried it
on, though the dark is richer visually.
28.7 EPK
21.5 Frit 3110
16.9 Dolomite
2.9 Talc
30 Flint
Clay Art List Serve
Many contributors
Tenmoku is the Japanese word for a type of tea bowl first produced in China during the Song Dynasty (960-1279). It also refers to a mountain between China's Zhejiang and Anhui Provinces (Mt. Tienmu in Chinese, Mt. Tenmoku in Japanese).