Training Example: Bullseye Glass Co. – Review the Data, Give Your Score & Compare to the Real AI Evaluation

[H1] Welcome to Bullseye Glass
[H3] ~ handcast glass since 1974 ~
[IMG: stained glass cactus by @sandandfireworks]
[H5] Happening Now!
[H2] Stained Glass Saleat Bullseye Glass Resource Centers
[H3] May 1–31
[H4] 50% off – Non-fusible Half Sheets40% off – Non-fusible 10 x 10s10% off – Copper Foil and Solder
Resource Centers
[H5] In-store Project Station
[H2] Make Magic with Silver on Glass at Bullseye Glass Resource Centers
[H3] No appointment needed!
[H4] $22–$28 a plate.
Resource Centers
[IMG: Set of square reactive plates]
[H2] The Bullseye Glass Story
In 1974, three recent art school graduates cobbled together a glass factory in the backyard of a ramshackle house in Portland, Oregon. Resourceful by nature and necessity, they built their factory with scraps repurposed from a shipyard. And, their products—hand-rolled sheets for the stained glass trade—were made from recycled bottle cullet. Shamelessly innovative and unconventional, Bullseye Glass Company was born. Watch the full video by Vitreonics here.
[H2] ~Bullseye Projects & Bullseye Studio~
Fine Art EXHIBITIONS & IN-HOUSE Fabrication Services for artists and designers
[H3] What Remains @ The Byre
What Remains is the fourth exhibition at The Byre, a centuries-old stone barn turned exhibition space in Caithness, the northern-most county in mainland Scotland. What Remains features site-specific installations and works by Celia Dowson, Katharine Dowson, Michael Endo, and April Surgent. Find out more at Bullseye Projects.
O
[H3] Bullseye Studio + Morgan Madison
Fabrication is currently underway at Bullseye Studio for Cascadia, a large-scale public artwork by Seattle-based artist Morgan Madison. Commissioned for the expanded SEA Gateway at Seattle-Tacoma International Airport, the project brings together design, ecology, and kilnformed glass at architectural scale. Read More.
[IMG: bullseye catalog]
[H3] Find Our Glass
Our online store, shop.bullseyeglass.com
Bullseye Resource Centers
Bullseye Glass Dealers
The Bullseye Glass Catalog
Factory Sales Departmentsales@bullseyeglass.com or 503.232.8887Orders at regular and wholesale prices
[IMG: kiln with writing on it]
O
[H3] KilnSpace by Bullseye Glass
No kiln? No problem. KilnSpace is a free, online hub for glass kiln rentals. Search for a kiln to rent or rent space in your own kiln and studio.
Find out more at kilnspace.bullseyeglass.com
[H2] What’s New?
[H2] Subscribe to the Newsletter
Sign Up

[IMG: Kiln inside Bullseye Glass Portland]
[H2] Locations
[IMG: RCBA Building]
[H4] Resource CenterBay Area
[IMG: Exterior photo of Bullseye Glass Resource Center in South Pasadena]
[H4] Resource CenterLos Angeles
[IMG: Exterior view of Resource Center Portland]
[H4] Resource CenterPortland
[IMG: Resource Center New York Mamaroneck]
[H4] Resource CenterNew York
[IMG: exterior photo of Bullseye Glass Resource Center Santa Fe]
[H4] Resource CenterSanta Fe
[IMG: Customer checking out at Bullseye Resource Center Portland]
[H3] Order Online, In-store Pickup
Bullseye Resource Centers stock a large selection of Bullseye glass, accessories, and tools. We are a destination spot for walk-in shopping! But if you want to order in advance for a speedy pickup, we have a few options available!

Hand-cast by artists for artists since 1974, our glass comes in hundreds of colors and styles. Each hue exists to realize the vision of makers around the world, whether for kilnforming, stained glass, or mosaic. About Our Glass is a user manual full of detailed product information to help artists have a deeper understanding of Bullseye Glass styles and how they interact with each other. For a more general overview, check out What to Expect from Bullseye Glass.
[H2] Product Information
[H3] Working Properties & Characteristics of Bullseye Glass by style
Within each style listing you will find:
Reactivity (Copper-bearing, Sulfur-bearing, Lead-bearing, Non-Reactive, Reactive with Silver, and special reactive styles)
Forms of glass available at shop.bullseyeglass.com: sheet glass, frit, rod, stringer, ribbon, confetti and billet
Accordion drop-down menus include Cold Characteristics and Working Notes for each form of glass. The rods drop-down also includes information specific to torchwork
[H2] Browse by Color
[IMG: Red Transparent sheet glass swatch]
[H3] Red
[IMG: Orange Opal, 000125-0030-F]
[H3] Orange
[IMG: Canary Yellow Opal sheet glass swatch]
[H3] Yellow
[IMG: Emerald Green Transparent sheet glass swatch]
[H3] Green
[IMG: 001108 Transparent Aquamarine Blue sheet glass swatch]
[H3] Blue-Green
[IMG: Cobalt Blue Opal sheet glass swatch]
[H3] Blue
[IMG: Deep Royal Purple Transparent sheet glass swatch]
[H3] Purple & Violet
[IMG: Black Opal sheet glass swatch]
[H3] Black
[IMG: Slate Gray Opal sheet glass swatch]
[H4] Gray
[IMG: Translucent White Opal sheet glass swatch]
[H3] White & Clear
[IMG: 001419 Tan Transparent sheet glass swatch]
[H3] Neutrals
[IMG: 000421 Petal Pink Opal sheet glass swatch]
[H4] Pink
[IMG: Petrified Wood Streaky glass swatch]
[H3] Color Mixes
[H2] Browse by Style Code
OPALESCENT
000009 Reactive Cloud Opalescent
000013 Opaque White Opalescent
000024 Tomato Red Opalescent
000025 Tangerine Orange
000034 Light Peach Cream
000100 Black
000101 Stiff Black
000104 Glacier Blue
000108 Powder Blue
000112 Mint Green
000113 White
000114 Cobalt Blue
000116 Turquoise Blue
000117 Mineral Green
000118 Periwinkle
000119 Mink
000120 Canary Yellow
000124 Red
000125 Orange
000126 Spring Green
000127 Nougat Rod
000131 Artichoke
000132 Driftwood Gray
000136 Deco Gray
000137 French Vanilla
000138 Marzipan
000139 Almond
000141 Dark Forest Green
000142 Neo-Lavender
000143 Lacy White
000144 Teal Green
000145 Jade Green
000146 Steel Blue
000147 Deep Cobalt Blue
000148 Indigo Blue
000161 Robin’s Egg Blue
000164 Egyptian Blue
000203 Woodland Brown
000206 Elephant Gray
000207 Celadon Green
000208 Dusty Blue
000212 Olive Green
000216 Light Cyan
000220 Sunflower Yellow
000221 Citronelle
000222 Avocado Green
000224 Deep Red
000225 Pimento Red
000227 Golden Green
000236 Slate Gray
000241 Moss Green
000243 Translucent White
000301 Pink
000303 Dusty Lilac
000304 Lavender
000305 Salmon Pink
000309 Cinnabar
000310 Umber
000312 Pea Pod Green
000313 Dense White
000320 Marigold Yellow
000321 Pumpkin Orange
000329 Burnt Orange
000332 Plum
000334 Gold Purple
000336 Deep Gray
000337 Butterscotch
000345 Steel Jade
000349 Gray Green
000403 Opaline
000420 Cream
000421 Petal Pink
000431 Pink Blush
000434 Purple Blush
000435 Peach Blush
000920 Warm White
CLEAR
001009 Reactive Ice Clear
001015 Clear, Silver to Gold
001016 Clear, Silver to Bronze
001019 Red Reactive Clear
001100 Clear Tekta
001101 Clear
001401 Crystal Clear
TRANSPARENT
001025 Light Orange
001105 Deep Plum
001107 Light Green
001108 Aquamarine Blue
001109 Dark Rose Brown
001112 Aventurine Green
001114 Deep Royal Blue
001116 Turquoise Blue
001118 Midnight Blue
001119 Sienna
001120 Yellow
001122 Red
001125 Orange
001126 Chartreuse
001128 Deep Royal Purple
001129 Charcoal Gray
001137 Medium Amber
001138 Dark Amber
001140 Aventurine Blue
001141 Olive Green
001145 Kelly Green
001149 Aventurine Bronze
001164 Caribbean Blue
001176 Peacock Blue
001205 Light Coral
001207 Fern Green
001215 Light Pink
001217 Leaf Green
001226 Lily Pad Green
001228 Amethyst
001229 Pewter
001232 Light Fucshia (Special Production Pinks)
001234 Violet
001241 Pine Green
001246 Copper Blue
001305 Sunset Coral
001311 Cranberry Pink
001320 Marigold Yellow
001321 Carnelian
001322 Garnet Red
001332 Fuchsia
001334 Gold Purple
001405 Light Plum
001406 Steel Blue
001408 Light Aquamarine Blue
001409 Light Bronze
001412 Light Aventurine Green
001414 Light Sky Blue
001416 Light Turquoise Blue
001417 Emerald Green
001419 Tan
001422 Lemon Lime Green
001426 Spring Green
001428 Light Violet
001429 Light Silver Gray
001437 Light Amber
001439 Khaki
001442 Neo-Lavender
001444 Sea Blue
001449 Oregon Gray
001464 True Blue
001701 Amber Lustre Rod
001707 Green Lustre Rod
001714 Blue Lustre Rod
001717 Copper Green Lustre Rod
001806 Juniper Blue Tint
001807 Grass Green Tint
001808 Aqua Blue Tint
001814 Sapphire Blue Tint
001816 Turquoise Blue Tint
001818 Indigo Tint
001819 Brown Topaz Tint
001820 Pale Yellow Tint
001821 Erbium Pink Tint
001823 Burnt Scarlet Tint
001824 Ruby Red Tint
001826 Green Tea Tint
001827 Light Amber Tint
001829 Gray Tint
001831 Ruby Pink Tint
001834 Coral Orange Tint
001837 Medium Amber Tint
001841 Spruce Green Tint
001842 Light Neo-Lavender Shift Tint
001844 Lavender Green Shift Tint
001845 Ming Green Tint
001857 Red Amber Tint
001858 Light Rhubarb Shift Tint
001859 Rhubarb Shift Tint
001864 Gray Blue Tint
001867 Olive Smoke Tint
001877 Olivine Tint
001917 Cilantro Green Tint
001920 Lemon Tint
001932 Fuchsia Tint
001934 Copper Tint
001948 Purple Blue Tint
001964 Lavender Gray Tint
001977 Pine Green Tint
STREAKY—COLOR BLENDS
002020 Clear, Sunflower Yellow Opalescent
002024 Clear, Red Opalescent
002026 Clear, Spring Green Opalescent
002037 Clear, French Vanilla Opalescent
002047 Clear, Deep Cobalt Blue Opalescent
002064 Clear, Egyptian Blue Opalescent
002100 Clear, Black Opalescent
002105 Blue Opalescent, Plum
002107 White, Light Green
002108 Powder Blue Opalescent, Marine Blue
002109 White, Dark Brown
002112 Mint Opalescent, Aventurine Green
002116 Turquoise Blue, Deep Royal Blue
002121 Yellow Opal, Aventurine Green
002123 White, Orange Opalescent
002124 Red Opalescent, White
002125 Yellow, Red Striker
002128 Royal Purple, Powder Blue Opalescent
002129 Charcoal Gray, White
002130 Clear, White
002137 Medium Amber, White
002140 Aventurine Blue, Clear
002146 Copper Blue, White
002164 Caribbean Blue, White
002176 Peacock Blue, White
002209 Dark Brown, White
002212 Olive Green Opalescent, Aventurine Green
002213 Black, White Cascade
002218 Aqua Blue Tint, White
002237 Warm White, Light Amber
002249 White, Light Silver Gray Cascade
002250 Soft Yellow Opalescent, Red
002302 White, Pink Opalescent
002304 White, Lavender Blue Opalescent
002305 White, Salmon Pink Opalescent
002310 White, Cranberry Pink
002311 Cranberry Pink, White
002312 Aventurine Green, White
002416 Light Turquoise Blue, True Blue
002537 French Vanilla, Light Turquoise BlueCascade & Infusion
002941 Warm White, Pine Green Cascade
002964 Warm White, True Blue Cascade
002971 Petrified Wood
003026 Cranberry Pink, Royal Blue, Spring Green, White
003045 Azure Blue Opalescent, Jade Green Opalescent, Neo-Lavender
003086 White, Turquoise Blue, Midnight Blue
003100 Clear, White, Black
003116 Clear, Turquoise Blue, White
003123 White, Orange Opalescent, Aventurine Green
003126 Cranberry, Royal Blue, Spring Green
003203 Woodland Brown Opalescent, Ivory, Black
003212 Olive Green Opalescent, Aventurine Green, Dark Rose Brown
003328 White, Deep Royal Purple, Cranberry Pink
003334 Cranberry Pink, Gold Purple, White
003345 Cranberry Pink, Emerald Green, White
003346 Cranberry Pink, Azure Blue, White
003501 White, Aventurine Green, Caramel Opalescent
We continually update this information to improve your experience, so check back often!

Our FAQ is a compilation of the most sought after knowledge on fusing, kilnforming, kilncasting, and working with Bullseye Glass products in general.
[H3] General
What is Glass?
Glass shows up just about everywhere. We use it in windows, tableware, containers, jewelry, and of course much more. The most common type of glass — and the type manufactured by Bullseye — is called “soda-lime glass.” Soda-lime refers to the composition of the glass, which is primarily silica, soda (sodium carbonate), and lime (calcium oxide). But for our purposes, glass serves as a unique art-making material.
To learn more, watch our video What is Glass
Is Bullseye glass COE 90?
Unfortunately, the answer to this question is not simple.  The intent of most glass fusers who ask this question is to find out if Bullseye glass is compatible with glass made by another manufacturer. But COE (“coefficient of expansion“) by itself cannot tell you if two glasses are compatible. In order to know that a Bullseye glass is compatible with glass from another manufacturer, you must conduct your own tests.
Matching COEs does not ensure compatibility between glasses, no matter what you read or hear anywhere else. There are many different factors besides COE that determine compatibility between glasses. COE is just a single factor.
Our fusible glasses are factory-tested for compatibility with each other. We do not test for compatibility with other manufacturers’ glasses. We do not test for COE or rate our glasses with COE numbers. We do not claim to produce glasses that are rated “COE 90.”
All compatible Bullseye glasses are tested compatible with other Bullseye compatible glass.
We strongly recommend reading TechNote 3: Compatibility of Glasses, which explains this complex and important matter in greater depth.
Can I fuse or cast Bullseye with any COE 90 glass?
The answer to this question is not simple. Our short response is this:
Matching COEs does not ensure compatibility between glasses, in spite of what you’ve read or heard from other practitioners or glass manufacturers.
Bullseye’s fusible glasses are factory tested for compatibility with each other. We do not test for compatibility with other manufacturers’ glasses. We do not test for COE or rate our glasses with COE numbers. We do not claim to produce glasses that are rated “COE 90.”
The ONLY way you can insure that a Bullseye glass will be compatible with another manufacturer’s glass is to conduct your own tests.
We recommend that you read TechNote 3: Compatibility of Glasses, which explains this complex and important matter in greater depth.
Can I use a ceramic kiln for glass?
Yes, as long as it’s programmable.
Do all Bullseye glasses perform the same in the kiln?
Not all Bullseye glasses behave identically. Slight variations can occur, depending on the viscosities of individual glasses. In About Our Glass, you can find the performance characteristics for all of our glasses by clicking on the individual colors.
What can I expect from Bullseye glass?
Read our full overview of What To Expect From Bullseye Glass.
How big are the individual granules of frit? If applying Bullseye frit with a sifter, what size mesh screen will I need?
Bullseye frit granules 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 achieved.
Bullseye extra large frit (-0005):Grain sizes range from 5.2 – 30mm; granules are retained on a 4-mesh screen.
Bullseye coarse frit (-0003):Grain sizes range from 2.7 – 5.2mm; granules pass through a 4-mesh screen but are retained on an 8-mesh screen.
Bullseye medium frit (-0002):Grain sizes range from 1.2 – 2.7mm; granules pass through an 8-mesh screen but are retained on a 16-mesh screen.
Bullseye fine frit (-0001):Grain sizes range from 0.2 – 1.2mm; granules pass through a 16-mesh screen but are retained on an 80-mesh screen.
Bullseye powder frit (-0008):Grain sizes are 0.2mm and finer; granules pass through an 80-mesh screen.
How can I learn to cut glass?
If you’ve never cut glass before, it’s a good idea to take a class and learn the fundamentals.  You can easily tell a person how to run a score line and break a piece of glass along a fissure, but it’s a skill that takes practice.  Your instructor should show you the best tools and techniques to use and you’ll get a chance to get a feel for it before investing in glass and equipment of your own.
We also have a free Glass Cutting video lesson.
How do Bullseye colors look after firing?
Many of our glasses look the same before and after firing, but some will mature or “strike” to target color during the firing process. The images of fusible glasses in our online store show how colors appear before and after heatwork. If you study these images and still have questions, don’t hesitate to contact our Sales Associates (Monday-Friday, 7-5 PST; 503.232.8887; or send us an email).
Note: If you plan to subject glass to repeated firing or exceptional heatwork, we recommend that you test samples of the glass to the required processes and firing cycles to most accurately predict color outcomes.
Is Bullseye glass compatible in all conditions?
When kilnforming, there are a multitude of variables to keep in mind. If you plan to subject Bullseye glass to unusual working conditions, we always recommend conducting your own tests.
Under normal working conditions, Bullseye glasses are known for reliable compatibility. Each batch of glass we produce in our factory is tested by firing to 1500 degrees Fahrenheit followed by a fifteen minute anneal soak; the batch is then checked for stress through polarized light. If a given batch doesn’t meet our standards of compatibility, we won’t label it as such.
Up to 1500 degrees Fahrenheit and followed with a fifteen minute anneal soak, Bullseye glasses can be expected to remain stable. If you plan on using a heat process with an extremely high temperature or unusually long firing time, we recommend conducting your own tests beforehand.
Also, be aware that if you use flameworked elements, those elements may have been heated beyond 1500 degrees Fahrenheit. Those elements should also be tested separately beforehand.
For more information, please read What to Expect from Bullseye Glass.
Is all Bullseye glass recommended for fusing?
Our top-quality sheet glass comes in two grades: Fusible and Standard (non-fusible). Fusible glass is coded as “F” and Standard or non-fusible glass is coded as “P.”
“Fusible” glasses pass factory testing for color and fusing compatibility. They carry the “Bullseye Compatible” label and are recommended for kilnwork and flamework, as well as cold applications.
“Standard” glasses pass factory testing for color, but are not designed for fusing. They are recommended for cold applications such as stained glass, mosaic, copper foil, and leaded work.
We also offer two grades of Curious-quality glass: Fusible-Curious and Curious. Fusible-Curious glass is graded “B”.  Its color or appearance fall outside of our target range, but it is still recommended for kilnwork, flamework, stained glass or mosaic.  Non-fusible Curious is graded “C”.  It falls outside our accepted color or appearance range and is not recommended for kilnwork but is still good for stained glass or mosaic use.
To learn more about our coding/grading system, please read our Glass Coding PDF.
Also, be sure to read our notes on What to Expect from Bullseye Glass.
Is Bullseye glass food safe?
Listed below are the Bullseye glasses that contain more than 1.0% lead or more than 0.5% cadmium. If you use any of these styles for food-bearing objects, we recommend capping them with Bullseye Clear Glass. In our testing, we have found that clear-capping results in minimal lead and cadmium leaching — well below FDA limits. In our testing, we have also found that transparent glasses leach lead/cadmium at levels below FDA limits, and much less than opalescent lead/cadmium-bearing glasses; so you may be able to use transparent lead/cadmium-bearing glasses without clear-capping.
Our testing, however, does not cover all glass styles or firing conditions, and it cannot be taken as a guarantee of food safety when using these glasses. If you sell food-bearing objects, it is your responsibility to have them tested, since lead/cadmium leaching can be affected by the specific processes to which the glass is subjected. A heavily textured surface, for example, has more total surface area and, therefore, more area from which lead/cadmium may be leached.
A local chemistry lab should be able to perform the necessary test for you, according to ASTM C738-94(2006) Standard Test Method for Lead and Cadmium Extracted from Glazed Ceramic Surfaces, for a relatively low fee of around $30 to $70 dollars per sample.
Download the Food Safety PDF
The following glasses contain more than 1.0% Lead (Pb)
Opalescent
Cobalt Blue Opaque Rod 000014
Translucent White 000243*
Pink 000301
Lavender 000304
Dusty Lilac 000303
Salmon Pink 000305
Dense White 000313
Plum 000332
Gold Purple 000334
*Note on Translucent White: Glass in this style produced prior to 4/29/16 contains lead. Production from 04/15/21 also contains lead.
Transparent
Light Coral 001205
Light Pink 001215
Light Fuchsia 001232
Violet 001234
Cranberry Pink 001311
Sunset Coral 001305
Fuchsia 001332
Gold Purple 001334
Cranberry Sapphirine 001342
Amber Lustre 001701
Green Lustre 001707
Blue Lustre 001714
Copper Green Lustre 001717
Burnt Scarlet Tint 001823
Ruby Red Tint 001824
Ruby Pink Tint 001831
Streaky
White, Pink Opal 002302
White, Salmon Pink Opal 002305
White, Cranberry Pink 002310
Cranberry Pink, White 002311
Petrified Wood, 002971
Cranberry Pink, Royal Blue, Spring Green, White 003026
Azure Blue Opal, Jade Green Opal, Neo-Lavender 003045
Cranberry Pink, Royal Blue, Spring Green 003126
White, Deep Royal Purple, Cranberry Pink 003328
Cranberry Pink, Gold Purple, White 003334
Cranberry Pink, Emerald Green, White 003345
Cranberry Pink, Azure Blue, White 003346
Ring Mottles
Lemon Yellow, White, Gold Pink 006323
White, Olive Green, Gold Pink 006343
White, Lime Green, Turquoise, Gold Pink 006467
White, Turquoise, Lime Green, Gold Pink 006446
White, Gold Pink 006210
White, Turquoise, Gold Purple 006336
The following glasses contain more than 0.5% Cadmium (Cd)
Opalescent
Tomato Red 000024
Tangerine Orange 000025
Canary Yellow 000120
Red 000124
Orange 000125
Spring Green 000126
Woodland Brown 000203
Sunflower Yellow 000220
Deep Red 000224
Pimento Red 000225
Golden Green 000227
Cinnabar 000309
Umber 000310
Marigold Yellow 000320
Pumpkin Orange 000321
Burnt Orange 000329
Butterscotch 000337
Transparent
Sienna 001119
Yellow 001120
Red 001122
Orange 001125
Chartreuse 001126
Marigold Yellow 001320
Carnelian 001321
Garnet Red 001322
Red-Orange 001022 (Rod)
Light Orange 001025 (Rod)
Streaky
Clear, Sunflower Yellow Opal 002020
Yellow, Deep Forest Green 002121
Clear, Red Opal 002024
Clear, Spring Green Opal 002026
White, Orange Opal 002123
Red Opal, White 002124
Yellow, Red 002125
White, Orange Opal, Deep Forest Green 003123
Woodland Brown Opal, Ivory, Black 003203
Some of our Collage sheet glass styles include streamers made with styles in the cadmium lists above.
(Updated August 2021)
What are “striking” glass colors?
Some Bullseye glasses appear pale or colorless in the cold sheet form, but “strike” or mature to a much different color when fired. Striking colors can vary, depending on temperature, atmosphere, and heat history.
Producing strikers allows for a greater palette of colors for kilnworkers. And because heat work is cumulative, we use the minimum amount so that kilnworkers can use more of it in their studios.
For projects that are especially color-sensitive, we recommend testing your striking glasses prior to use either by fusing or torch working small samples. This will help you predict final color results.
Our video lesson Heatwork and Color covers the topic of striking glasses. You can also learn more in our article What to Expect from Bullseye Glass.
What should I know about studio safety?
Here are are some general guidelines to avoid injury while working in the kiln-glass studio. For more information, see Safety in the Kiln-Glass Studio.
When working in a kiln-glass studio, cuts will happen, but they are usually not deep. You will want to have a first aid kit on hand with a supply of Band-Aids.
A greater safety concern in a kiln-glass studio is particulate in the air. For example, dusts and powders. You will want to make sure your studio is well-ventilated and that you wear a suitable respirator.
Also, be sure to read the owner’s manual for any piece of equipment you plan on using while working. Don’t assume you know how to work with one type of equipment because you’ve worked with something similar before. Always read the instructions and, if possible, take a class or workshop in your area to get practice.
What’s the specific gravity of Bullseye?
The specific gravity of Bullseye glass is 2.5.
What is Bullseye’s glass coding system?
Download the Bullseye Glass Coding System PDF
What is The Rule of Halves?
This rule is important to know for successful glass cutting. A score is more likely to run properly when there are equal amounts of glass on either side of it. This is particularly important for cutting strips of glass.
What are Curious glasses?
The grading system for our handmade glass demands that each sheet match a target color and have a uniform appearance to receive first-quality grade. Glass that is not quite the target color or that has some other irregularity is graded “Curious” and is sold at a discount. Curious glass that is fusible is graded “Fusible-Curious” and is also sold at a discount. Fusible-Curious sheets are held to the same compatibility requirements as first-quality sheets. Our Curious and Fusible-Curious sheets are excellent for one-of-a-kind projects and are a great value for your dollar. Some of these sheets may be found in the Limited section of our online store.
A much wider selection is available when you order by phone or email or when you shop at our Resource Center and some regional dealerships.
What are Special Production glasses?
Occasionally we produce limited runs of top grade glass styles that are not included in our regular product line. We refer to these as “Special Production” sheets. Special Production sheets may be one-of-a-kind or available in multiples. They may be fusible or non-fusible. Some Special Production sheets may be found in the Limited section of our online store. Often, a wider selection is available when you order by phone or email or when you shop at our Resource Center and some regional dealerships.
Want to know about our newest special production sheets as they become available? Sign up for our mailing list, or check back with our online store frequently.
How do I know which Bullseye clear glass to use?
Tekta is Bullseye’