Tracy Wilson on tue 10 feb 98
Well I finally got around to typing this thing up...
Thank you one and all for all the donated recipes. I only tested 31 out of
almost 100 I received. I'll continue testing and reporting as the winter
DRAGS on.
All the glazes were tested on #900 Miller clay which is a toasty ^10
stoneware. One side of the test tile was brushed with a thick coating of
Cynthia Bringle's wet/dry white slip. Each glaze was dipped in three
thicknesses on a heavily textured tile. All tiles were fired to a (hard)^9
(10 tipping)reduction firing. 1 hr. Body reduction at ^08 and 1 hr. glaze
reduction at ^9 then a quick reox. before shutdown. Any time potash or
Custer spar is called for, I used G-200. All ball clay is OM-4 . Many
glazes I substituted 75% of the amount of Barium with Strontium. All kaolin
is EPK. Remember... glazes don't travel well. Your results will probably
be TOTALLY different. Please test before use.
Following are recipes and results:
____________________________
1.Copper Blue from H.S. days at Gould Academy
Neph Sy 57.5
Barium 26.5
Ball Clay 6.2
Flint 7.1
Lithium Carb 2.7
________
100
Copper Carb 2.7%
I'd had this glaze mixed up for years and retried it. Very dry matt deep
turquoise blue/green going to teal where thick. Beige where thin. Didn't
react well to CB slip
____________________________
2.Rutile Blue #1 from Alfred U. days
Potash Spar 32.2
Whiting 20.5
Flint 19.5
EPK 16.6
Talc 11.2
________
100
Rutile 8.3%
Tan where thin Beige where med. and mottled light blue where thick. Satin
matt to gloss.
____________________________
3. Rutile Blue #2 from Kevin
Dolomite 15.8
Custer 30.0
Whiting 11.1
EPK 16.8
Flint 26.3
_______
100
Rutile 8.0%
Tan satin almost gold where thin. pasty blue gloss where thick. Beautiful
with CB slip
____________________
4. Leach Blue handed over by Bob Santerre
Feldspar 55
Whiting 22
Gerstley Borate 4
Flint 14
Tin Oxide 3
Cobalt Carbonate 1
Manganese Diox. 0.5
_____
99.5
Glossy medium blue where thick and glossy slate blue where thin.
__________________________________
5.Anderson Blue
Sodaspar 53.3
EPK 13.3
Ball Clay 6.7
Whiting 20.0
Cobalt Carb. 6.7
______
100
Matt glaze almost black where thin, army green where thick. Nice colonial
(bluish slate) over white slip
____________________________
6. Blatant Blue from Ellen Baker
Flint 32
Whiting 19
Custer spar 27
Ball Clay 20
Cobalt Carb 2
______
100
Rich glossy deep blue. no crazing (although it's hard to tell with such a
deep blue)
____________________________
7.Mayan Blue from Clayart about a year ago
Gerstley Borate 50
EPK 15
Flint 35
_______
100
Bentonite 20%
Chrome Oxide 10%
Cobalt Carb. 10%
Deep teal over white slip. other wise dark blue/black where thick. Brown
where thin. Crawled slightly over the slip.
____________________________
8.V&O Lt Blue from Alfred/ Jim Chalkley
Whiting 19.6
Flint 32.9
EPK 20
Potash Spar 27.5
_______
100
Barnard 3%
Couldn't detect any lt. blue but I remember it used to be beautiful on
carved porcelain. (Jim, are you out there?)
____________________________
9.V&O Blue Green also from Alfred
Whiting 19.6
Flint 32.9
EPK 20
Potash Spar 27.5
_______
100
Ochre 2%
Looks like a pretty typical celedon to me.. glossy with no crazing
____________________________
10. Dunham Blue from Bob Santerre
Custer Feldspar 39.5
Whiting 11.0
Kaolin 6.3
Strontium Carb. 11.0
Flint 23.7
Copper Carb. 0.4
Rutile 4.0
Iron Oxide 4.0
_________
99.9
glossy black brown. Almost looks like temoku but very deep blue where it
pools
____________________________
11. Stable Blue also from Bob Santerre
Custer Feldspar 30.6
Flint 26.55
Whiting 18.9
Tenn. Ball Clay 12.66
EPK 10.2
Cobalt Carbonate 1.21
______
100.12
Medium royal blue with or without slip. glossy. Breaking to green where
thin.
____________________________
12.Carlton Mottled Blue from Ray
Potash Spar 42.10
EPK 1.80
Flint 27.20
Whiting 2.60
Gerstley Borate 8.80
Dolomite 8.80
Zinc Oxide 1.70
Strontium 3.3
Tin 2.60
Rutile 4
Copper Carb 0.5
Bentonite 3
________
106.4
Heavy texture glossy glaze. Lavender to blue over white slip. Nice rutile
blue where thick breaking to brown.
____________________________
13. Goodrich Mediterranean Blue from Don
Potash Spar 33.3
Whiting 25
Ball Clay 12.5
Flint 25
Zinc 4.2
______
100
Cobalt Carb 5%
Chrome 2.5%
Satin smooth gloss. Deep teal (thick) to black(thin)
____________________________
14. Midnight Cobalt Blue from Ellen Baker
Flint 31
Whiting 20
Custer Feldspar 33
EPK 14
Spodumene 2
______
100
Cobalt Carb 7%
Very deep dark glossy blue
____________________________
15. Emmanuel Cooper s Blue Crystal #383
Potash Spar 35
Whiting 10
Dolomite 20
Flint 30
Bentonite 5
_______
100
Rutile 10%
Cobalt Carb 1.5%
Satin Matt. Pulled up like an ash glaze. Not sure I got it thick enough.
Pea green to slate blue. I'm going to try again.
____________________________
16. Blue Green Satin Matt Clemson U
Potash Spar 38.5
Whiting 20
EPK 20
Flint 15
Cobalt Carb 1
Rutile 6
_______
100.5
Satin matt. Slate blue breaking to green where thin Also a nice gray where
the green is.
____________________________
17. Satin Nightmare
Cornwall Stone 50
EPK 25
Whiting 25
__________
100
Red Iron Oxide 8%
Satin matt. Very similar to Shaner red. Very metallic brown going to deep
red over white slip.
____________________________
18. Moceri Blue Matt from Ellen Baker
Flint 3.94
EPK 6.9
Bentonite 1.97
Neph Sy 59.11
Copper Ox. 1.48
Strontium 18.475
Lithium Carb 1.97
_______
93.845
similar to Copper blue (#1) Turquoise stony matt. Goes to lavender over
slip
____________________________
19. Blue Dean from clayart database
Custer 65
*#$%&% 26.25
Bentonite 3
Copper Ox. 4.35
______
98.6
Satin turquoise. goes to deep gray where thick
____________________________
20. Pablo s Blue
Potash Spar 46.8
Flint 20
EPK 2.5
Whiting 12
Gerstley Borate 13.7
Zinc Oxide 4
Dolomite 6
Tin Oxide 3
Copper Oxide 0.5
Rutile 0.5
Cobalt Carb 1
Red Iron Oxide 0.5
_______
110.5
Very glossy kind of milky dark blue. Interesting over white slip
____________________________
21. Israeli Blue #1 from Naama
Soda Spar 50
EPK 20
Magnesium Carb 10
Whiting 10
Flint 10
_______
100
Cobalt Carb 2%
Manganese Dioxide 1%
Satin deep blue going to tan where thick. Feels wonderful and buttery
____________________________
22. Israeli Blue #2 from Naama with Tom Buck s advice
Soda Spar 50
EPK 20
Talc 10
Whiting 10
Flint 10
_______
100
Cobalt Carb 2%
Manganese Dioxide 1%
Talc instead of Mag. carb. makes the glaze glossier and the color isn't
quite as consistent but a little deeper blue..
____________________________
23.Textured Blue
Potash 21.03
Neph Sy 21.03
Ball Clay 4.53
Gerstley Borate 11.82
Dolomite 7.53
Talc 14.44
Silica 19.61
______
100
Cobalt Oxide 3%
Satin glaze. Deep purple where thick. Midnight blue where medium. soft
purple with slip.
____________________________
24.New Blue
Potash 30
Dolomite 5
Whiting 16
EPK 13
Flint 37
Bentonite 2
Red Iron Ox. 0.5
Cobalt Carb 0.5
Rutile 1
______
105
Glossy slate blue. Looks good over slip
____________________________
25.Dark Plum
Neph Sy 35
Dolomite 15
Silica 30
Strontium 6
Whiting 8
EPK 4
Manganese 4
Cobalt 0.5
_____
102.5
variegated brown and blue. glossy. not a lot of color concentration
____________________________
26. Glossy Deep Blue Green
Whiting 24
Potash Spar 28
EPK 19.8
Flint 28.1
Zinc Oxide 3.1
Chrome Ox 0.3
Cobalt Carb 1.4
_________
104.7
Deep teal over stoneware deep blue with slip. Satin to almost gloss glaze
____________________________
27. Carlton Mottled Blue same as before with added cobalt
Potash Spar 42.10
EPK 1.80
Flint 27.20
Whiting 2.60
Gerstley Borate 8.80
Dolomite 8.80
Zinc Oxide 1.70
Strontium 3.3
Tin 2.60
Rutile 4
Copper Carb 0.5
Bentonite 3
Cobalt Carb 0.99
__________
107.39
glossy. didn't get it thick enough but I think it will be a darker rutlie
mottled blue
____________________________
28.Waxy Matt Blue from Bonnie Terry
Potash Spar 39
Dolomite 7
Gerstley Borate 12
Talc 15
EPK 4
Flint 23
_______
100
Rutile 4%
Cobalt Carb 0.5%
Satin glaze. solid brown where thin to medium. Mottled breaking blues
browns and gold.
____________________________
29. Blue Matt Davidson from Gould
Feldspar 53.8
Whiting 24.8
Ball Clay 21.4
________
100
Cobalt Carb 0.7%
Matt glaze. Colonial blue breaking to soft green where thick. Bland brown
where thin. Doesn't break to green over the white slip.
____________________________
30. VC Rich Matt Blue from Clayart Database
Potash Spar 39
Gerstley Borate 2
Dolomite 21
Whiting 2
EPK 25
Flint 11
_______
100
Cobalt Carb 1%
Chrome 0.25%
Manganese Dioxide 0.5%
Dark brown on stoneware. Slate blue over white slip. Satin Matt
____________________________
31. Peacock Blue
Potash Spar 34
Gerstley Borate 12
Whiting 7
EPK 9
Talc 19
Flint 19
______
100
Cobalt Oxide 0.3%
Chrome Oxide 0.5%
Light blue where thick hint of teal. Satin glaze.
------------------------------------
Tracy Wilson
Saltbox Pottery
4 Shaw Rd.
Woolwich, ME 04579
phone: 207-443-5586
fax: 207-442-8922
email: saltbox@ime.net
web: http://www.ime.net/~dwilson/
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