Question:

How do I apply glaze?

Salt and pepper shaker holes

It is often difficult to keep salt and pepper shaker holes in the top from filling in with glaze during the firing. Next time insert short pieces of toothpick in each hole and put them in the kiln that way. The wooden toothpick will burn out during the firing but will help to keep holes clear of glaze.

Clear Satin Matt

Clear Satin Matt: Cone 4 - 7 Oxidation
Ferro Frit 4508 50.0
Potash Feldspar 20.0
Ball Clay 20.0
Magnesium Carbonate 10.0

Clear to Milky Crackle

Clear to Milky Crackle: Cone 4 - 6 Oxidation
Lithium Carbonate (Toxic!) 25.0
Gerstly Borate 25.0
Zinc Oxide (calcined) 5.0
Calcium Flouride 5.0
Silica 25.0
Bentonite 2.0
Not suitable for tableware!

Satin Mottled Eucalyptus

Helens Satin Mottled Eucalyptus: Cone 5 Neutral Gas Atmosphere. Comment: Results in muddy color in electic kiln. Not suitable for tableware!
Nephelene Syenite 40
Whiting 25
Ball Clay 25
Lithium Carbonate 5
Silica 5
Copper Carbonate 2

Coat marker

A lead pencil is a handy tool for keeping track of the number of coats of glaze you have on a piece. You can write which step you are on over the glaze and the marks will fire out.

Firing reds

The red family of glazes is easily contaminated and requires more venting and a faster firing schedule.

To avoid pitting and pinholes

To avoid pitting and pinholes in your glaze, be sure that your greenware is free of dust before applying glaze. A damp sponge will help to do the job.

Glazes coming out with a grainy surface,

If you have a problem with glazes coming out with a grainy surface, you may be applying them too thin. The best way to correct this problem is to warm piece slightly and apply another coat, then re-fire to proper cone.

Recipe: Aqua Blue Dry Glaze

Aqua Blue Dry Glaze
Cone 2 - 4
Oxidation
Nephelene Syenite 40.0
Barium Carbonate (Toxic!) 30.0
Ball Clay 15.0
Zinc Oxide 5.0
Black Copper Oxide 4.0
Comment: Fast cooling helps preserve color.

Spill base description

Spill base is that class of glaze that is applied over, under or between application of other coloured glazes, causing them to blend and form spill effects when fired.

Recipe: Matt Clear

Matt Clear E/W
Cone 04
Oxidation
Potash Feldspar 46.8
Silica 10.0
Colemanite 11.0
Whiting 13.0
Barium Carbonate (Toxic!) 13.0
Zinc Oxide 4.0
Not suitable for tableware!

Brush Loading

For best results in glazing, be sure to load brush well with colour.

Brilliant Blue Satin

Helens Satin Brilliant Blue Cone 6-7
Neutral Gas Atmosphere
Potash Feldspar 15
Nephelene Syenite 20
Zinx Oxide 20
Silica 5
Barium Carbonate 40
Cobalt Oxide 0.7
Not suitable for tableware!

For special effects

For special effects, you can control how the crystals will run on a piece by actually placing them in certain areas. If, for example, you want the crystals to run down only from the top rim of a piece, simply apply the normal number of coats of glaze and add just enough crystals around the top rim to obtain the desired effect.

Using slips/oxide washes with glazes

Thin slips and oxide washes can be used to decorate a piece by applying them directly to the bisque or on top of a glaze. Clear, celedon, and some light opaque glazes can be used over the colorants. Be careful not to get oxides and slips on too thick--the application should be more like water colors than house paint. The colorants are mostly quite strong, and if they are
thick the overlying glaze is likely to crawl. Decorations can be brushed, stamped with foam stamps or sponges, spattered, sponged into textures, silk screened...

Opalescent glaze description

An opalescent glaze has a milky, translucent, sometimes bluish sheen.

Liquid Glazes: commercial

Commercial Liquid Glazes: You can purchase commercial glazes and underglazes in liquid form, which are usually formulated for brushing. All you need to apply the glaze is a brush. Some glazes are difficult to brush on smoothly, you will see brush marks. Others will melt enough to erase the brush marks.

Maturity

All glazes need to be fired to maturity to achieve the desired results. The temperature for maturation varies with the glaze formulation.

Greyed red or orange family glazes

You can get greyed red or orange family glazes by firing your pieces too hot. Temperature should be at a 06-07 for earthenware.

Thinning glaze

Glaze that has thickened can be thinned to the proper consistency with the addition of water.

Dipping method

If you have a lot of pieces that you want to glaze, you can try the dipping method. There a re special glazes designed for this which are concentrated to cover in one coat.

Second firing

By firing a piece a second time, you can create different effects with your antique, art and some specialty glazes.

Clear Gloss 4

Clear Gloss: Cone 6 Oxidation
Volcanic Ash 63.7
Ferro Frit 3134 27.3
Koalin 9.0
Bentonite 1.0

glazes coming out with a grainy surface,

If you have a problem with glazes coming out with a grainy surface, you may be applying them too thin. The best way to correct this problem is to warm piece slightly and apply another coat, then re-fire to proper cone.

Embossing glaze

Any glaze may be used over embossing glaze as long as the embossing glaze has been fired first.
Embossing glazes are opaque and, if used in too wide and area, can crack in the firing.
Embossing glazes do not flow in the firing process.

Ceramics Frequently Asked Questions

What precautions should I take in the studio?

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What is Clay?

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Are any two kilns are exactly alike?

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how do I throw clay?

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What is The History of the Way of Tea

What is Celadon (Cheong-Ja) - the Stuff of Kings?

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What is a glaze?

How do I Burnish?

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Is there a trick toThrowing Porcelain?

Have you some lovely words?

What is Earthenware?

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Does over firing produce poor colour in coloured glaze?s

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What is a glaze?

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automatic kiln sitter, should I trust it?

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How do I attach a bat to the wheelhead?

What tools do I need for ceramics

What are suggested plate clay weights?

What do I need to get started?

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How do I fire ceramic bisque ?

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How do I roll a slab?

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What is the correct firing time?

How to I prepare and make slabs?

What is Leatherhard ?

What materials are toxic in Ceramics?

How do I fire glaze?

What are slabs?

What is Korean celadon?

How do I fire Raku?

How do I make paperclay?

Can Crackle glazes be used for food?

How do I avoid S cracks in wheel thrown ware

how do I apply glazes?

How do I get the press onside?

How do I open-up the clay?

How do I fire Reds/Yellows?

What is a glaze?

How do I fire Ceramic glaze ?

Can I repair my kiln?

What are the Approx. firing times?

Ho do I avoid pitting and pinholes?

How do I make throwing ribs?

What is Stoneware?

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What is a Stain?

What is a mold?

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How do I cut the spare?

What is a ´good teapot´?

How do I Bisque fire in an electric kiln?

How do I keep a kiln log?

How do I paint Eyes?

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How do I apply crackle glazes ?

What is Primary clay?

What are some easy projects?

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What are cones?

How do I Drain small pour holes?

What is Glaze?

What is Raku?

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How do I glaze my ware?

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How do I apply texture?

What is overglaze/lustre?

Must my kiln be level?

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What clay should I use?

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can I draw directly onto a piece?

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what is porcelain?

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How do I mend Greenware?

how do I get the best results in glazing?

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What is the history of Ceramics?

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How do I load my kiln for a glaze firing?





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