Question:

What are some stoneware glazes?

Semi matt golden yellow

Semi matt golden yellow

Very intensive golden yellow. More red when thin, glossier when thicker. 1270oC with one hour at top temperature. Safe glaze.

potash feldspar NR 64,35
whiting 18,93
china clay 3,15
Albany slip 5,68
rutile 7,89
red ferric oxide 6,31

Recipe: Silky matt mushroom-colored

Crystal glazes: Silky matt mushroom-colored
A good glaze based on zinc and barium. Very smooth. Not too thick. 1260-1280oC with 1/2 to one hour at the top temperature.
potash feldspar NR 44,67
whiting 4,67
zinc oxide 15,79
barium carbonate 16,26
china clay 13,93
rutile 4,67

Black, semi glossy oilspot

Oxidation:

Black, semi glossy oilspot

Rather thick or it will be no spots. 1260-1280oC with one hour at the top temperature.
Albany slip (the real thing) 70,74
petalite 16,08
ochre 8,36
red ferric oxide 4,82

Recipe: Blue and yellow crystals

Crystal glazes: Blue and yellow crystals
A semi glossy crystal glaze based on frits and zinc. It tends to run not too much, but spray it thinner near the bottom of the pot. 1260oC with ¾ hour at top temperature. Usually it behaves very good. The crystals can be very complex and large. Use it alone or together with one of my 6713-glazes. If you reburn it the crystals will be smaller.
boric frit MOK1 17,50
zinc barium frit 90420 26,40
quarts (flint) 23,10
zinc oxide 22,10
china clay 4,30
bentonite 3,30
rutile 3,30
cobalt carbonate 1,30
manganese carbonate 2,00

Glossy yellowish with blue crystals

Crystal glazes: Glossy yellowish with blue crystals
One of my most popular crystal glazes based on zinc and lithium. Too thick it will run a lot, but it can be controlled very exactly after a few tests. Always spray the glaze thinner near the bottom of the pot. 1260oC with 1/2 to one hour at the top temperature. Does not need a slow cooling. You can also try other combinations of coloring oxides.
potash feldspar NR 27,60
quarts (flint) 32,20
dolomite 3,48
zinc oxide 18,70
barium carbonate 4,44
china clay 2,75
lithium carbonate 6,82
rutile 4,01
cobalt oxide 1,06

Turquoise silky matt

Turquoise silky matt
A very loved dark turquoise blue glaze. If too thick it will run and be very dry and not good. Works best on very fine porcelain clays. I use a French clay from Limoges. 1260-1280oC with one hour at top temperature.
potash feldspar NR 51,06
barium carbonate 21,28
china clay 8,51
wollastonite 17,02
lithium carbonate 2,13
copper oxide 1,70

Recipe: Semi glossy blue and yellow

Crystal glazes: Semi glossy blue and yellow
A very popular crystal glaze with zinc. You must not apply it too thick, or it will be yellow gray and not so good. 1260-1280oC with one hour at the top temperature. Does not need a slow cooling. You can also try other combinations of coloring oxides. Very small bright crystals.
potash feldspar NR 63,49
dolomite 15,87
zinc oxide 17,46
rutile 3,17
cobalt carbonate 1,59

Recipe: Dark and light yellow crystals

Crystal glazes: Dark and light yellow crystals
A semi glossy crystal glaze based on frits and zinc. It tends to run not too much, if not sprayed too thick. 1260oC with ¾ hour at top temperature. Usually it behaves very good. The crystals can be large. boric frit MOK1 17,60
zinc barium frit 90420 26,40
quarts 22,20
zinc oxide 22,00
china clay 4,50
bentonite 3,30
rutile 4,00
ferric oxide 0,80

Recipe: Light blue chün

Light blue chün
Works best on colored clays, but is also good at white stoneware. Apply rather thick. Good to heavy reduction. Cracks on some clays but not on others.

borax frit, MOK G-3 2,00
china clay 2,00
whiting 19,80
quartz (flint) 29,70
potash feldspar NR 39,60
talc 5,90
red ferric oxide 1,00

Black with brown or blue dots.

Black with brown or blue dots.

Apply rather thick. Works well in oxidation an then gives a semi transparent to opaque glaze with a lot of blue. In reduction it gives a more opaque glaze. You can use it on white porcelain to dark brown stoneware clays. On brown clays it must be very thick to give blue patches.

potash feldspar NR 38,57
whiting 5,71
barium carbonate 8,57
talc 2,86
ball clay 302 8,57
quartz 22,87
ilmenite 7,14
zinc oxide 5,71

Tenmoku

Tenmoku glazes and similar:
Good black Tenmoku with brown edges on white or light gray clay. Not too thick. 1260-1280oC in normal reduction. Semi glossy. More rost-colored with yellow or brown bodies.

Cornish stone 64,57
china clay 9,71
quartz 12,91
whiting 16,12
red ferric oxide 8,06

Recipe: Glossy gray, blue and brown

Crystal glazes: Glossy gray, blue and brown
A glaze based on zinc and lithium. Spray the glaze thinner near the bottom of the pot, or it will run a lot. 1260oC with 1/2-3/4 hour at the top temperature. Does not need a slow cooling
potash feldspar NR 29,00
quarts (flint) 34,50
dolomite 3,60
zinc oxide 18,50
barium carbonate 4,14
china clay 3,31
lithium carbonate 6,90
rutile 1,38
red ferric oxide 1,24
manganese carbonate 2,21
cobalt carbonate 0,22

Recipe:Glossy cobalt blue

Crystal glazes: Glossy cobalt blue
One of my most popular crystal glazes based on zinc and lithium. Too thick it will run a lot, and it is not so easy to find the best thickness. Always spray the glaze thinner near the bottom of the pot. 1260oC with 1/2 to one hour at the top temperature. Does not need a slow cooling, but will sometimes be better if you make a second equal firing. A delicate but difficult glaze.
potash feldspar NR 28,40
quarts (flint) 33,00
dolomite 3,66
zinc oxide 19,26
barium carbonate 4,58
china clay 2,75
lithium carbonate 7,34
rutile 0,92
cobalt oxide 1,38
red ferric oxide 2,02
manganese carbonate 0,37.

Ash glaze

Benji's ash glaze
Cone 9
Hardwood ash(washed) 16.5%
Softwood ash(washed) 16.5%
Custer spar 39%
E.P.kaolin 13%
Whiting 6%
Barium carbonate 5%
Silica 4%
Black iron oxide 1%
Bentonite 2%

Thank you to Edouard Bastarache
for supplying glaze recipie.

Dry Turqoise

Dry Turqoise
Cone 8
Oxidation
Nephelene Syenite 50.0
Barium Carbonate (Toxic!) 30.0
Litium Carbonate (Toxic!) 3.0
Ball Clay 8.0
Flint 9.0
Copper Carbonate 2.0

Comment: Fire in oxidation. Not suitable for tableware!

Very reddish brown, semi matt with darker spots

Very reddish brown, semi matt with darker spots

Rather thick or it will be no spots. 1260-1280oC with one hour at the top temperature. One of the most red glazes I know based on ferric oxide in oxidation. You can try other simple boric frits with not too low maturing temperature instead of G-3.

feldspar NGP 37,22
bone ash 12,41
talc 8,68
petalite 12,41
quartz (flint) 9,93
ball clay 7,44
red ferric oxide 6,95
borax frit MOK G-3 4,96

Black Gloss

Black Gloss
Cone 9 - 10
Oxidation or Reduction
Potash Feldspar 46.0
Dolomite 16.0
Kaolin 19.0
Iron Oxide 3.0
Cobalt Carbonate 1.5

Comments: fire in oxidation or light reduction. Heavy reduction will result in metallic black.

Sorelslag

Edouard's Sorelslag
Cone 9
Custer spar 56.8%
Dolomite 13.6%
Whiting 10.6%
Zinc oxide(calc.) 3%
E.P.kaolin 16%
Magnesium carbonate 1%
Sorelslag(200 mesh) 4%

Comments: Sorelslag is a titanium dioxide slag made by QIT-Quebec Iron and Titanium, located in Tracy,Quebec.
Its general formula is as follows:
Tio2.82%
Feo8%
Sio2.2%
Al2o3.3%
Mgo5%
Thank you to Edouard Bastarache
for supplying glaze recipie.

Recipe: Black and blue with silvery spots

Crystal glazes: Black and blue with silvery spots
This glaze can be a little tricky, but when everything is OK it is very good. You must try out the right thickness, and know that it will run if too thick. It is opaque or half transparent, glossy or matt with silvery or (blue) black crystals. Make a lot of tests before you give it up! 1270oC with ½ hour at top temperature.
nepheline syenite 69,25
zinc oxide 5,77
wollastonite 11,51
magnesium carbonate 3,85
Albany slip (the real thing) 7,70
rutile 1,92
copper oxide 3,08
cobalt oxide 3,08
vanadium pentoxide 2,31

Semi matt gray, green and blue

Semi matt gray, green and blue

Color depends on thickness. Very thin glaze is gray, fairly thin green and semi matt. Thicker glaze becomes blue and semi glossy to glossy with small crystals. 1270oC with one hour at top temperature. Very good for incised decoration. Safe glaze.

potash feldspar NR 59,40
whiting 17,50
china clay 4,66
Albany slip (the real thing) 7,30
rutile 7,30
zinc oxide 1,16
quarts 1,46
cobalt oxide 1,46

Recipe: Glossy orange yellow

Crystal glazes: Glossy orange yellow
A colorful crystal glaze based on zinc and lithium. Too thick it will run a lot. Spray the glaze thinner near the bottom of the pot. 1260oC with 1/2-3/4 hour at the top temperature. Does not need a slow cooling. Try a second burning. Try also more ferric oxide.
potash feldspar NR 28,80
quarts (flint) 33,00
dolomite 3,57
zinc oxide 19,50
barium carbonate 4,67
china clay 2,75
lithium carbonate 7,70
rutile 2,20
red ferric oxide 2,20

Shino glaze

Shino glaze

Use only on brown stoneware clays with or without lava or pyrite. Do not work on white or gray clays. Apply normal to thick. 1260-1280oC with good to heavy reduction.
nepheline syenite 33,33
ball clay 33,33
wollastonite 33,33

Recipe: A fat Celadon

Reduction:

Celadon glazes and similar:

92187 Fat greenish gray Celadon

A fat Celadon at its best when thick. No crackle. 1260-1280oC in normal to heavy reduction. Semi matt. White and colored stoneware clays.
potash feldspar NR 38,10
china clay 7,90
quartz (flint) 28,60
whiting 15,90 talc 9,50
red ferric oxide 1,10

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