|Stained Glass • Fusing • Mosaics • Jewelry Supplies|
@nancyknuckey There are several reasons that air can be trapped and form a bubble in the center of your project. The most common is that the glass is being heated unevenly and the edges are becoming soft and sealing shut before the center softens. To help alleviate this, you can reduce the rate your kiln is heating at and add a "bubble squeeze" segment to your firing schedule. Another tactic some artist find useful is to position little chips of clear fusible glass (compatible with the project) at intervals around the outside edge to act like tent poles, creating a tiny gap on either side for air to escape during firing.
I am getting trapped air in the middle of the saucer/coaster mold. I am using 2 layered fully fused glass. Should I drill a hole in the middle?
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