Cone Ten Reduction Glazes
If you test any of these, please let me know how you liked it! Most of them were tested and passed my taste tests before. These are all reduction fire glazes unless otherwise specified.
*Spodumene Concentrate production was discontinued in 2012. You may want to try the formulas with Spodumene and see if you like the result.
Roger’s #18, warm, soft blue celadon
Spodumene Concentrate* 25.6
Whiting 15.3
EPK 18.4
Silica 40.7
total 100.0
+Cobalt Carbonate 0.1%
+Manganese Dioxide 4.8%
Kei Ito Red, beautiful pigeon blood red, a bit tricky but worth a try!
Custer Feldspar 50.0
Ferro Frit #3134 5.0
Dolomite 5.0
Whiting 8.0
Barium Carbonate 5.0
Zinc oxide 2.0
Silica 25.0
total 100.0
+Macaloid 5.0%
+Tin oxide 2.0%
+Copper carbonate 0.5%
Shiny Amber, strong, shiny yellow celadon, fits well to everything and always reliable, never run
EPK 8.45
Custer feldspar 41.55
Whiting 16.05
Barium carbonate 6.05
Silica 27.95
total 100.05
+Bentonite 3.0%
+Red Iron oxide 3.0%
+Rutile (powder) 2.15%
+Copper carbonate 0.2%
Satin Matt, cream with snow crystals, works great with any colorants
Custer feldspar 41.3
Whiting 13.2
Spodumene 7.5
Dolomite 13.5
EPK 19.5
Talc 5.0
total 100.0
+Zircopax 2.5%
+Bentonite 1.0%
Kikuta Blue celadon (blue, transparent)
potash feldspar 50.0
Zinc oxide 5.0
Whiting 10.0
EPK 10.0
Silica 45.0
total 120.0
+Red iron oxide 1.5%
Korean celadon (greenish), this will turn into a bit yellowish if you miss the early reduction, but if you catch it on time, sweet “green tea” green is promised.
Custer feldspar 25.6
Whiting 25.6
EPK 13.0
Ball clay 20.4
Silica 20.4
Red iron oxide 1.5
total 100.0
Yellow Celadon #2 – my #1 favorite, so reliable, always works. This makes a good green celadon with some iron too.
Silica 30.0
Whiting 28.0
Custer feldspar 31.0
EPK 13.0
total 102.0
+Bentonite 2.0%
+Copper carbonate 2.1%
+Red iron oxide 2.1%
Octopus blue (thin: transparent blue, thick: purple and green streaks in blue)
Custer feldspar 27.0
Ball clay 15.0
Whiting 26.6
Silica 26.4
EPK 5.0
total 100.0
+Cobalt oxide 0.15%
+Iron chromate 0.4%
+Black copper oxide 0.4%
+Bentonite 2.0%
Green luster (deep forest green, thin: transparent, thick: luster sheen on the surface)
Red art clay 8.0
Nepheline syenite 3.0
Barium carbonate 2.0
Talc 3.0
Whiting 24.4
Silica 26.0
Custer feldspar 24.8
EPK 10.8
total 102.0
+Chrome oxide 0.2%
+Red iron oxide 0.4%
+Manganese dioxide 0.4%
+Cobalt carbonate 0.4%
+Copper carbonate 0.8%
+Bentonite 1.6%
Mud slide (works for both cone 10 reduction, oxidation and cone 5/6 oxidation)
Nepheline syenite 55.0
Magnesium carbonate 45.0
total 100.0
*you can tint this white glaze with colorants
Icy white crackles (large)
Nepheline syenite 81.73
Ferro Frit #3124 9.62
Talc 4.81
Bentonite 3.85
total 100.00
Bubbly beads (special effect) White, opaque 3D beads
Custer feldspar 35.0
Cornwall stone 55.0
Whiting 10.0
total 100.0
+Bone ash 6 – 12%
Turtle shell crystal (large, works about the same at cone 5/6 oxidation, good with colorants)
Potash feldspar 90
Whiting 10
total 100
Snake skin ash
Wood ash (unwashed) 40
Cornish stone 30
Wollastonite 30
total 100
Kyoto Green speckles (opaque mottled yellow green with tiny crystals)
Potash feldspar 4
Dolomite 7
Whiting 31
EPK 40
Silica 18
total 100
+Red iron oxide 1%
+Copper carbonate1%
Blue celadon *Never tested*(but isn't it wonderful if this simple formula works?)
Pumice stone 75
Tobacco ash 25
total 100 *I have never tested this before, please let me know if you try!
Blue shadow celadon, shiny, transparent with pale blue tint (Ying Ching blue cleadon)
Cornish stone 25
EPK 25
Whiting 25
Silica 25
total 100
+Red iron oxide – 0.5% for blue shadow celadon, 2% for jade green
Non-iron blue celadon
Custer feldspar 27.26
Whiting 23.28
EPK 19.20
Zinc oxide 3.00
Silica 27.26
total 100.00
+ blue stain of your choice 2%
Opaque teadust base (works great with colorants)
Custer feldspar 28.4
Laguna borate 11.0 (or any borate)
Dolomite 9.6
Talc 13.2
EPK 7.6
Silica 30.2
total 100.0
Eggshell chrome pink, Opaque, satin, mottled pink (tricky because it gets affected by reduction easily)
Spodumene concentrate* 37.0
G-200 feldspar 21.5
Laguna borate 7.5
Alumina Hydrate 13.0
EPK 7.5
Silica 11.5
Titanium dioxide 2.0
total 100.0
+Chrome oxide 0.5%
Warm yellow-green celadon
Pumice 31.0
Cornish stone 25.0
Wollastonite 8.9
Dolomite 10.0
EPK 16.7
Silica 8.4
total 100.0
+Red iron oxide 4.0% (or for Mid-night blue gray, add 6% rutile)
Or, for iridescent yellow to blue with brown edge, 0.2% Red iron oxide and 8% rutile
Total Pink
Spodumene concentrate 41.2
Nepheline Syenite 13.8
Ferro Frit #3134 7.0
EPK 10.0
Alumina Hydrate 12.0
Silica 15.0
Titanium Dioxide 1.0
total 100.0
+Chrome oxide 0.25%
Galaxy blue (with white speckles)
Custer feldspar 30.0
Whiting 16.0
Talc 12.0
EPK 30.0
Silica 12.0
total 100.0
+Rutile (powder) 8.0%
Eggshell pink or Turkish purple (pink to lavender)
NC-4 feldspar 40.9
Nepheline syenite 12.3
Talc 12.1
Strontium carbonate 12.6
EPK 14.6
Silica 7.5
total 100.0
For eggshell pink, +0.25% chrome oxide
For Turkish purple, +1% cobalt oxide and +0.15% copper carbonate