Which statement about water jet cutting is true?

Which statement about water jet cutting is true?

• A. It leaves burrs
• B. It uses a high-pressure water jet to cut materials with no burrs and no heat
• C. It can only cut metal
• D. It requires burning to cut materials

Answer: (B)

Waterjet cutting works by eroding material with a high-velocity jet of water (often with an abrasive). Because the cut is mechanical-erosive rather than thermal, there is effectively no heat-affected zone, so the material isn’t burned or thermally distorted. Edges tend to be clean, with little to no burr formation, which is why this method is praised for producing smooth cuts. It’s versatile and can cut a wide range of materials, not just metal, and it doesn’t rely on burning to cut. That combination—high-pressure water (often with abrasive) and no heat input—best matches the statement.

Waterjet cutting works by eroding material with a high-velocity jet of water (often with an abrasive). Because the cut is mechanical-erosive rather than thermal, there is effectively no heat-affected zone, so the material isn’t burned or thermally distorted. Edges tend to be clean, with little to no burr formation, which is why this method is praised for producing smooth cuts. It’s versatile and can cut a wide range of materials, not just metal, and it doesn’t rely on burning to cut. That combination—high-pressure water (often with abrasive) and no heat input—best matches the statement.