Fiber lasers are 10 percent shorter than CO2 laser beams in wavelength. Because of its shorter wavelength, fiber lasers produce a beam that is easier to absorb by reflective materials. A CO2 laser's wavelength is less likely to reflect off these surfaces. This allows fiber laser cutting machines to cut brass, bronze, and other reflective material. A CO2 laser beam that reflects on the material can damage not only its cutting lens, but the entire beam path. This risk can be eliminated by using fiber-optic cables to guide the beam.
How can you compensate? Traditionally, you would touch the contact points by coming down. Next, rotate the tube and touch the opposite side. This will give the control an indication about how bent the tube may be. This can be used to ensure that through-holes fit the application. Be aware that this reduces your ability to deliver very precise tolerances every time the tube rotates.