Glass furnace #1 at Pulliam Hall. This semester I took Intro to Glassblowing as an elective, and today was the first day of class. Our instructor (another grad student) did a few quick demos, and went over a lot of terminology and safety rules. The one thing she had us do on the first day was put on some sunglasses, slide open the door to the furnace, and look inside for a few seconds, just so we could feel the heat. The furnace was in the process of curing a new batch of molten glass, which it did at about 2200 degrees Fahrenheit.