To cut sandwich material or composite material, the high pressure water will expend the material and destroy interlayer during piercing, the only solution is to drill holes on each piercing entrance, that's an option to add a drilling head attach on our cutting head.
the driilling head will feed itself automatically to driil through material, and the feed range can be preset before drilling and cut.
Drilling action can be set on CNC according to lead in piercing, and optional pre-drill all holes in advance, or programmable by drawing.