Glass rods are produced in a glazier's bench and require 1 deben of melted glass to make. In order to produce 1 glass rod you need to keep the glazier's bench between 1600 - 2400 degrees for 60 seconds. Glass rods are used in secret research by students of 2 or higher at universities. Also, once secret research was completed, Pyramid technology at each university was unlocked. 70 Glass rods are needed at each University to unock Pyramid Construction research.