Borobars are made by dry pressing glass powder into a bar shape and then melting it into a solid form.
Borobars Glass Specifications: - COE: 33 - Softening Point: 820 C / 1508 F - Annealing Point: 560 C / 1040 F - Approximate Bar size: 3.5″ L x 0.25″ W x 0.25″ H
