How does laser machining differ from water-jet machining?

Laser machining and water-jet machining differ primarily in their physical mechanisms for material removal.

Laser Machining

Laser machining is a nonconventional method that utilizes an intense beam of light from a laser to cut metal or refractory materials. The process works by melting and vaporizing the material at the point of contact. Because this method is energy-intensive, it is typically reserved for precision tasks, such as drilling small holes in materials that are difficult to process using traditional tools, including ceramics, diamonds, and engine components in the aircraft industry.1

Water-Jet Machining

Water-jet machining involves forcing water through a small-diameter nozzle at extremely high velocity. This high-pressure stream creates and penetrates cracks to slice away thin layers of material. This process can be performed with or without the addition of an abrasive substance. Its primary advantages include the ability to cut narrow, straight channels with minimal noise and without causing damage to the surrounding surface.2

While both are effective for specialized cutting, laser machining relies on thermal energy to vaporize material, whereas water-jet machining relies on high-pressure mechanical force.12