The differences between these two cutting techniques don’t just lie in their methods but in their results and applications, too. When choosing between laser vs. waterjet cutting in your applications, consider the following:

1. Fundamental Cutting Methods and Mechanisms

• Waterjet Cutting: Waterjet cutting is a process that uses a high-pressure stream of water mixed with an abrasive material, such as garnet, to cut through a wide range of materials quickly and accurately. 
• Laser Cutting: In contrast, laser cutting uses a focused laser beam to rapidly melt or vaporize material, producing precise cuts with excellent cutting edge quality and high processing speed. The laser beam is focused on an area by adjusting the lens to create a better cut.

2. Material Suitability and Thickness Capabilities

Both laser and waterjet are excellent choices to cut metals. Waterjet cutting is better suited for thicker, more rigid materials than laser cutting because of its high-pressure capabilities. Any required secondary operations will help determine the best technology for the job.

3. Performance Metrics: Precision, Speed, and Cost

3.1 Precision and Tolerance Control

 Laser cutting delivers exceptionally high accuracy, reaching tolerances of +/-0.005″, depending on the speed of the laser. Waterjet cutting typically holds a tolerance of +/- 0.03″.

3.2 Cutting Speed and Efficiency

 Laser cutting is generally faster than waterjet cutting and cuts more inches per minute.

3.3 Cost Analysis

In terms of overall production costs, laser cutting is typically more cost effective than waterjet cutting thanks to its higher cutting speed, greater efficiency, and shorter processing times. Waterjet cutting is comparatively expensive, requiring many components to run properly, including a high-pressure pump, abrasive materials, and cutting heads.

4. Post-Processing: Component Cleanup and Finishing

Laser cutting can sometimes leave a few burrs on the cut surfaces of the components. The components then require deburring for optimal smoothness, functionality, and safety. In contrast, waterjet cutting produces smooth, high-quality edges with minimal burrs, reducing post-processing requirements and allowing parts to move directly to assembly or further manufacturing.

Conclusion:

There is no single cutting method that is best for every application. This article compares laser cutting and waterjet cutting, highlighting their key differences to help you choose the most suitable process for your material, design, and production requirements.

To learn more cutting information, click HERE for a detailed article.

If you have any questions about how to choose laser cutting and waterjet cutting for your project, please feel free to contact us. Our experts will offer professional suggestions for your consideration.