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Glaze

You’ve thrown the clay, carved the details, and fired it to perfection.

Now it’s time for the finishing touches. ProKilnSupply carries a curated selection of Speedball glazes and underglazes to help you bring color, depth, and a durable finish to every piece—whether you’re going for subtle, satin tones or bold, glossy highlights.

We’re focused on stocking the Speedball essentials makers reach for most, and we’re always expanding the glaze lineup as we grow—so you can count on reliable favorites and new options over time.

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$16.00 - $16.00
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Speedball Mid-Fire Basque Green Glaze

Speedball

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$26.00 - $26.00
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$26.00 - $26.00
$26.00

Speedball Mid-Fire Raspberry Fizz Glaze

Speedball

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$26.00 - $26.00
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$26.00

Speedball Mid-Fire Living Coral Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$26.00 - $26.00
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$26.00

Speedball Mid-Fire Midnight Plum Glaze

Speedball

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$26.00 - $26.00
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$26.00

Speedball Mid-Fire Blackcurrant Glaze

Speedball

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$17.16 - $17.16
$17.16
$17.16
$17.16 - $17.16
$17.16

Speedball Yellow Earthenware Glaze

Speedball

Speedball Earthenware Glazes offer artists spectacular results with brilliant colors that fire true consistently. These glazes are designed for use...

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$16.03 - $16.03
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$16.03 - $16.03
$16.03

Speedball Chartreuse Earthenware Glaze

Speedball

Speedball Earthenware Glazes offer artists spectacular results with brilliant colors that fire true consistently. These glazes are designed for use...

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$18.00 - $18.00
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$18.00

Speedball Mid-Fire Blackened Copper Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$26.00 - $26.00
$26.00
$26.00 - $26.00
$26.00

Speedball Mid-Fire Dragon Stone Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$16.00 - $16.00
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Speedball Mid-Fire Teal Agate Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
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Speedball Mid-Fire Blue Moss Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
$18.00
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Speedball Mid-Fire Lavender Mist Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$16.00 - $16.00
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$16.00

Speedball Mid-Fire Wisteria Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
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Speedball Mid-Fire Variegated Lapis Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$16.00 - $16.00
$16.00
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$16.00

Speedball Mid-Fire Sea Glass Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$16.00 - $16.00
$16.00
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$16.00

Speedball Mid-Fire Smoke Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
$18.00
$18.00
$18.00 - $18.00
$18.00

Speedball Mid-Fire Hematite Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
$18.00
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$18.00 - $18.00
$18.00

Speedball Mid-Fire Storied Sage Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$16.00 - $16.00
$16.00
$16.00
$16.00 - $16.00
$16.00

Speedball Mid-Fire Buttermilk Glaze

Speedball

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$16.00 - $16.00
$16.00
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$16.00

Speedball Mid-Fire Champagne Quartz Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$16.00 - $16.00
$16.00
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$16.00

Speedball Mid-Fire Coriander Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
$18.00
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$18.00 - $18.00
$18.00

Speedball Mid-Fire Prussian Jade Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
$18.00
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$18.00

Speedball Mid-Fire Ethereal Blue Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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$18.00 - $18.00
$18.00
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$18.00 - $18.00
$18.00

Speedball Mid-Fire Jasper Glaze

Speedball
Out of stock

The new Speedball Mid-Fire Glazes are an artist-led project developed in partnership with ceramic artist, Nancy Sowder, highlighting how artists sh...

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