How to cut the edges when making cable trays

Cutting a cable tray requires proper measurement, marking, the right cutting tool, and edge finishing to ensure safety and maintain structural integrity.

Step-by-Step Guide

1. Prepare and Measure

• Use a measuring tape to determine the exact length or section to cut.
• Mark the cut line clearly with a permanent marker or chalk to ensure accuracy ( ). 2. Select the Appropriate Cutting Tool
• Band saw: Ideal for thin metal trays; provides clean cuts with minimal burrs ( ).
• Circular saw: Suitable for light metal trays; cordless options like Hilti SCM 22-A offer precision and safety features ( ).
• Angle grinder: Offers flexibility for irregular cuts but produces more sparks and requires careful handling ( ).
• Hacksaw or metal cutting snips: Useful for small or thin sections ( ).
• Avoid using torches, as they can damage surface coatings and weaken the material ( ). 3. Secure the Tray
• Clamp the tray firmly in a vise or with clamps to prevent movement during cutting ( ). 4. Cutting Technique
• Follow the marked line carefully.
• Maintain a steady hand and consistent speed to avoid jagged edges.
• For angle grinders, hold with both hands and protect surrounding materials from sparks ( ). 5. Deburring and Edge Finishing
• After cutting, use a deburring tool, metal file, or sandpaper to smooth sharp edges.
• This prevents injury and ensures cables can be installed without damage ( ). 6. Safety Precautions
• Wear Kevlar gloves, safety glasses, hearing protection, and appropriate footwear ( ).
• Ensure the work area is clear of flammable materials and bystanders.
• Avoid mixing cutting blades between different metals to prevent contamination or galvanic corrosion ( ). 7. Optional Enhancements
• Apply cutting oil or lubricant for thicker trays to reduce heat and prolong blade life ( ).
• Use LED illumination or proper lighting to clearly see the cutting line ( ). By following these steps, you can achieve a clean, safe, and precise cut on a cable tray, maintaining its structural integrity and ensuring safe installation of cables.