The manufacturing of transparent float glass begins with the melting of raw materials in a furnace at temperatures reaching 1,700 degrees Celsius (about 3,092 degrees Fahrenheit). Once the mix reaches a molten state, it is poured onto the tin bath, where it spreads out evenly. As it cools, it solidifies into flat sheets. The thickness of the glass is controlled by adjusting the flow rate of the molten glass and the speed at which it is drawn off the tin. The resulting product is then annealed in a lehr, which helps to relieve internal stresses, ultimately enhancing its durability.