B Water jet abrasive cutting
water jet abrasive cutting uses a high pressure jet of water combined with an abrasive substance to cut through materials. The advantages of this form of cutting are that the jet can be adjusted and the kind of abrasive changed so that almost any kind of material can be cut without changing its properties in any way. With heat, there is always some damage to the areas nearest the cut.
This form of cutting has many applications. It can be used to cut metals, composites. and even thick concrete. At the other end of the scale, fine water jets, without added abrasives, are used in surgery.