This Bullseye fusible glass sheet is double rolled and compatible with all other Bullseye 90coe glass.
The picture shows what you can expect from your Bullseye sheet glass colours before and after heatwork in the kiln. Please note colour shades may vary depending on your web browser.
The top row shows the unfired cold glass colour. For stained glass, refer to the top row.
The same glass after firing to a full fuse is shown directly below the cold glass. For kilnformed glass, refer to the bottom row.
Cold characteristics - Varies from lighter to darker. Striker
The colour usually deepens on firing. There is a possible dark interface reaction with some selenium and/or sulfur glasses. It is less viscous (softer) than most other glasses. Some striking glasses like this one need to be fired slowly during the initial stages of the firing cycle. If fired too fast they may not strike at all or they may strike, but appear spotty and have a blue-brown cast as opposed to the desired target color.
Contains Lead. May react with glasses containing Selenium or Sulfur.
Some gold-bearing striking glasses like this one should be fired with a 2 hour hold at 1225°F during the initial stages of the firing cycle. If fired without this hold they may not strike at all, or they may strike but appear spotty and have a blue-brown cast, as opposed to the desired target colour.
This full fuse schedule effectively strikes these glasses:
Rate Temp Hold
* 1225 2.00
600 1490 0.10
9999 900 **
* The initial rate of heat is not a critical factor in successfully striking gold-bearing glasses. Choose an intial rate of heat appropriate to the scale and design of the project that you are firing.
** The remainder of the cycle depends on the thickness of the piece. Consult the Bullseye Annealing Chart.
For colour-sensitive projects we recommend testing the cycle you plan to use by fusing a small sample of a similar setup in the same kiln as the project to best predict the final colour results.
Bullseye glass is a handmade product and colours may vary slightly between production runs. Some colours may change slightly upon repeated firing or with extensive heatwork. It is recommended that you test glasses before use under your specific firing conditions.