Waterjet cutting is a precise and versatile method for cutting stone, but errors can compromise the quality of the cut or damage the material.
Here are three common mistakes people make when waterjet cutting stone:
1. Incorrect Water Pressure and Abrasive Settings
Issue: Using the wrong water pressure or abrasive flow rate can lead to poor cuts. Too much pressure may crack or chip the stone, while too little pressure results in uneven or incomplete cuts.
Solution: Calibrate the water pressure and abrasive feed rate based on the stone’s thickness, density, and type (e.g., granite, marble, or slate). Consult the KMT Waterjet Cut Calculator App (Image 1 below) or perform test cuts.
2. Inadequate Fixturing and Support
Issue: Failing to properly secure the stone can cause it to shift or vibrate during cutting, leading to uneven edges or breakage.
Solution: Use sturdy clamps and supports to hold the stone securely in place. Ensure the worktable is level and equipped with a proper cutting grid to reduce vibrations. (Image 2 below)
3. Neglecting to Account for Kerf Width
Issue: Overlooking the kerf width (the material removed by the waterjet) can lead to inaccuracies, especially when precision is critical for fitting or design.
Solution: Adjust the cutting path in the design software to account for the kerf width, ensuring the finished piece meets the desired specifications. (Image 3 below)
By addressing these common mistakes, you can improve the quality, efficiency, and precision of waterjet cutting stone projects.
Visit the KMT Stone FAQ’s page for answers to your questions about stone cutting with waterjet.
