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Day of the Dead Skulls

Pâte de Verre is a casting method that involves hand-packing layers of frit and powder in a refractory mold. The term literally means “paste of glass” in French. Works made with this technique take many forms. These include thin-w…

What is fusing?

Fusing is the technique of joining two or more pieces of glass by heat in a kiln. There are different glass fusing techniques. For example “tack fusing” is a fusing technique in which the pieces of glass are heated until they are just read more

What temperature should I use for slumping?

Glass slumping is a fun and rewarding kilnforming technique to make bowls platters plates and many other objects.  Usually a slumping project will require a lower temperature and a longer hold time than many other types of kilnforming read more

What's the specific gravity of Bullseye?

The specific gravity of Bullseye glass is 2.5. read more

Screen Printing: Screen Setup & Care

Screen printing is a time-honored method of image production dating back hundreds of years. Both flexible and cost-effective, it has been successfully adapted to a variety of media for use in commercial, fine art, and pop-culture setti…

What should I know about studio safety?

Safety in the kiln-glass studio should be your number one priority.  Cuts will happen but they are not usually deep.  You will also want to be aware of particulate in the air.  Make sure your studio is well-ventilated and read more

What is kilnforming?

Kilnforming is the process of shaping of glass within a kiln using heat and gravity. Kilnforming encompasses a wide variety of glassforming methods including glass fusing glass slumping kilncasting printmaking drawing and painting with read more

Is Bullseye glass COE 90?

Glass fusers who ask this question usually want to know if Bullseye glass is compatible with glass from another manufacturer. Unfortunately the answer to this question is not simple. Our short response is this Matching COEs does not read more

Bringing Home Your New Kiln

Many artists assume they need to rent a dedicated space to work on kiln-glass projects. But you can accomplish a lot in a home studio with just a kiln, a table or bench, and some basic tools.In this lesson, we'll set up a home studio a…

Clear Powder on Iridescent Sheet Glass

One simple yet powerful design tool available to kilnformers is the addition of clear powder to iridescent sheet glass. The grains of powder alter the reflective qualities of the iridescent coating, making a range of metallic effects p…

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Clean Shield Gel

  When properly applied' Clean Shield Gel (8224) brings out luster and gives dry' matte surfaces the sealed appearance of a low-temperature firepolish. (Unfired' unsealed sandblasted surfaces have a "dry" appearance that can…

Color Line Paints & Pens Product Information

Overview Color Line Paints & Pens are ready to use enamels for glass or ceramics in a fantastic range of intense colours. Available in squeeze bottles for use as lining pens or in larger units for painting' airbrushing'…

Prefiring Your New Kiln

  Before using a new kiln for glass projects' you'll need to pre-fire it. This burns out binders' moisture' and other residue left over from the manufacturing process. New shelves can be slow to take on primer so we recommend…

Gold-Bearing Pink Tints

Samples of Ruby Red Tint (001824-0030-F) from various production dates. To consistently reach target color when firing our gold-bearing striking glasses' Bullseye advises a pre-rapid heat soak of 2 hours at 1225°F (663°C) on…

Fine Lines

Candle-bent Fine Line stringers bring a lean line quality to this Mid-Century inspired design. Bend the Stringer Holding the stringer with thumbs and forefingers' place the spot you want to bend in the tip of a candle flame…

Fresh Color

New color palettes bring freshness to artwork. You can discover professionally curated' current color combinations to make your own in magazines and websites about design' interiors' and even fashion. An article about bedroom…

Opaline Ring

Put a Ring On It! Explore the possibilities of a palette of green rings capped with Opaline! As an overlay' Opaline scatters light for a dramatic impact on base colors. Note the blue hue it adds to the dark-valued green here and…

GlassTips: Opalescents

What to expect from selected Bullseye sheet glass. This handy reference guide explains what you can expect from your Bullseye sheet glass colors before and after heatwork in the kiln. Click on the small style swatches to the left…

Mold Tips: Deep Form

Overview Making this deep bowl form is easy as 1-2-3.  Each consecutive firing shapes the form' ultimately resulting in a deep' tall' steep-sided vessel. Download our Mold Tips' Deep Form PDF for some tips to maximize…

Mold Tips: Big Bowl

Overview Turn your glass designs into practical finished pieces you can use yourself or give as gifts to friends and family. The Big Bowl Mold produces a classic wide fruit bowl or salad bowl shape with a stable base. How can…

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Day of the Dead Skulls

Pâte de Verre is a casting method that involves hand-packing layers of frit and powder in a refractory mold. The term literally means “paste of glass” in French. Works made with this technique take many forms. These include thin-w…

Screen Printing: Screen Setup & Care

Screen printing is a time-honored method of image production dating back hundreds of years. Both flexible and cost-effective, it has been successfully adapted to a variety of media for use in commercial, fine art, and pop-culture setti…

Bringing Home Your New Kiln

Many artists assume they need to rent a dedicated space to work on kiln-glass projects. But you can accomplish a lot in a home studio with just a kiln, a table or bench, and some basic tools.In this lesson, we'll set up a home studio a…

Clear Powder on Iridescent Sheet Glass

One simple yet powerful design tool available to kilnformers is the addition of clear powder to iridescent sheet glass. The grains of powder alter the reflective qualities of the iridescent coating, making a range of metallic effects p…

Dealing with Devitrification

A common phenomenon that many kilnformers encounter is devitrification. Devitrification, or devit, is the growth of crystalline structures on the surface of glass. It generally appears as a haze or scum that no amount of cleaning will …

Working with Frit Balls

Dots are a fundamental element of design. In kilnforming, you can incorporate round dots into your work by creating frit balls. These tiny spheres of glass are the result of firing pieces of coarse frit until they are transformed into …

Expanding the Color Palette: Composite Colors

"Bullseye already makes enough colors."- Klaus Moje Bullseye makes an extensive palette of sheet glass colors. But that's just the beginning. You can create an even broader array of hues for use in kiln-glass projects by firing two …

Why Did It Break?

Kilnforming glass can yield results that range from elegantly simple to intriguingly complex. But when a piece emerges from the kiln cracked or broken, the results are just disappointing. The good news is that a piece always breaks for…

Inline Plate Project

In this project-based lesson, we'll work with stringer to create a simple and pleasing line-based design. In this lesson you will learn how to make a fused and slumped plate using 2mm stringer and 3mm sheet glass. Then we'll consider d…

Screen Printing with Hand-Cut Stencils

Screen printing provides an effective way for artists to transfer various kinds of imagery to glass. There are many ways to prepare screens for printing, the most common being the emulsion method. This lesson explores another approach …

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How big are the individual granules of frit? If applying Bullseye frit with a sifter, what size mesh screen will I need?

Bullseye offers jars of frit that come in five sizes: extra large (available in clear only), coarse, medium, fine, and powder. We recommend applying frit with a sifter, as there are a number of interesting effects that can be…

What is Bullseye's glass coding system?

Bullseye Glass Coding System PDF

Is Bullseye glass COE 90?

Glass fusers who ask this question usually want to know if Bullseye glass is compatible with glass from another manufacturer. Unfortunately, the answer to this question is not simple. Our short response is this: Matching COEs…

What are "striking" glass colors?

A small number of Bullseye glasses appear pale or colorless in the cold sheet, but "strike" or mature to target color when fired. The images of striking glasses in our online store and product catalog show how colors appear before and…

Is Bullseye glass compatible in all conditions?

Bullseye glasses are well known for reliable compatibility. But understanding the conditions of our factory testing is important, especially for anyone firing glass under unusual or extreme conditions. To learn about our compatibility…

What can I expect from Bullseye rods?

In the production of Bullseye rods, five characteristics are evaluated: Compatibility: Bullseye Compatible rod styles are factory tested to the same standards as other Bullseye Compatible materials for kilnforming. Color:…

Is Bullseye glass food safe?

Below we have listed the Bullseye glasses that contain more than 1.0% lead or more than 0.5% cadmium. If you are using any of these styles for food-bearing objects, we recommend capping them with Bullseye clear glass. In our tests we…

How and why should I clean glass before firing it?

Cleaning glass removes problem-causing contaminants like glass-cutting fluid, oils, minerals, salts, dusts, fibers, sticker residues, pen marks, and fingerprints. If these contaminants are not removed from glass before it's fired,…

What is coldworking?

Coldworking is changing the shape or surface texture of glass, using tools and processes that do not rely on heat. Coldworking methods include grinding, carving, engraving, polishing, sandblasting, and other techniques.

What coldworking equipment do I need?

In short, you need the equipment that's right for the type of work you're making and the results you want to achieve. We recommend that you take a class to learn about the range of possibilities and try out various kinds of equipment…

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