What cutting process uses a high-speed and high-pressure jet of water to cut materials such as textiles, wood and stone, leaving no burrs and no heat?

• A. Water jet cutting
• B. Laser welding
• C. Punching machines
• D. Press brake machines

Answer: (A)

This question is about cutting without heat using a fast, high-pressure jet of water. That approach is water jet cutting. It works by directing a stream of water at the material at very high pressure, often with an abrasive added for tougher materials. Because there’s no heat involved, there’s no heat-affected zone, which means edges stay clean and burr-free and there’s minimal distortion. Textiles, wood, and stone respond well to this method precisely for those reasons. The other options rely on heat or mechanical shaping rather than a cold, jet-based cut, so they wouldn’t produce the burr-free edges described or avoid heat effects.