SA: How do you bend the tubes?
DA: I hold the marked area of the tube over a flame and start slowly bending the glass to match the pattern. As I bend the tube over the flame, I blow into the tube so that the diameter of the heated area is maintained—otherwise it will collapse.
SA: How do you make different colors?
DA: Colors are made in many different ways. It comes down to the tubing, which can be clear or colored, the fluorescent coating—if there is any—and the gas, either argon mercury, which is a blue gas, or neon gas, which is bright orange.