Tube Laser Cutting Systems Model 40268
Imagine putting a through hole centered on a tube. It should be centered according to the actual dimension and not just one side of the tube. Bowed tubes will make it more difficult. Tube fabricating is hard work.
The CO2 resonance is larger and requires more power as electricity is used to heat a mixture of gases to produce the laser beam. Mirrors increase the intensity of the light and prepare it to leave the resonator. After leaving the resonator the beam must travel through a path made up of several cooled lenses until it reaches its destination. This travel results in a loss in power and quality for the laser beam.