Because composites are not homogenous materials and are reinforced for greater strength, cutting composites are always considered to be a tough work. As a non-contact cold cutting process, waterjet does not produce heat-affected zones, or leave rough edges and burrs. High pressure waterjet can cut the composites in a fast speed. The abrasive added in the cutting also have grinding function which will make the cutting surface smoother, cleaner and more accurate. Therefore, waterjet is the best choice for composite cutting.