By keeping tabs on laser optics, gas flow, chiller performance, and machine cleanliness, a metal fabricator can ensure that a laser cutting machine is performing as it should and possibly lengthen the machine's working life as well.
Knowing the capabilities and drawbacks of laser and waterjet machines is the key in determining which is best for a particular application.
Laser machine users know it, but often ignore it. Laser manufacturers swear by it, but often don't push it. It's maintenance, and it should be the watchword of anyone who owns and operates a laser.