Umber Opal (310) 2mm
Contains sulfur and may react to copper bearing glasses. Slight reactive potential to lead bearing glass. This style is not suitable for kilncasting because it can become incompatible when held at high temperatures for an extended period. It may also become incompatible in instances where processes exceed the parameters of the test for compatibility. Testing recommended when heatwork exceeds these parameters.
Sheet sizes are:
1/2 Sheet - 20" x 17"
1/4 Sheet - 10" x 17"
10" x 10"
5" x 7"
5" x 7"s are perfect for testing colors before you commit to buying a larger piece, or if you just need a small piece.
Please click to add one Glass Handling Fee to your glass order for 1/2 sheets.
We will bill you through PayPal if your handling fee is not included.
Reaction Chart: Download PDF