Unless prevented by a separator like shelf primer, hot glass will stick to most ceramic or metal surfaces and crack as it cools. Careful application of this primer to shelves and molds will result in a smooth surface for firing.
One pound of dry shelf primer will make enough to coat about 32 shelves, 20" x 20" (50.8 cm x 50.8 cm), 5 coats per shelf.
Weight: 2.3 kg (5 lbs)
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Kona Stained Glass Ltd. 1391 East 33rd Ave. Vancouver BC Canada V5V 3B9 604 877 1332