How to Use CNC Plasma Table To Cut Corrugated Metal

How Does CNC Plasma Table to Cut Corrugated Metal

A CNC plasma table cuts corrugated metal by directing a high-velocity jet of ionized gas through the metal at the point of contact, melting it away with precision. This process is controlled by computer numerical control (CNC), ensuring accurate, repeatable cuts even on corrugated surfaces.


In the dynamic arena of metal fabrication and design, corrugated metal emerges as a prime choice due to its exceptional blend of strength and lightweight attributes, complemented by a distinct aesthetic of ridges and grooves. Recognized for its prevalent use in construction, particularly for roofing, corrugated metal has also gained popularity in artistic endeavors, offering a canvas for creativity. The challenge of accurately cutting this material, particularly with the precision of a CNC (Computer Numerical Control) plasma table, demands a nuanced understanding and deliberate strategy. This article explores the specialized use of CNC plasma technology for cutting corrugated metal, focusing on the material’s unique characteristics that present specific challenges. By adjusting and applying precise techniques, achieving optimal results with a plasma table or a CNC plasma cutter becomes attainable, even when navigating the complexities of corrugated metal’s structure.

Corrugated Metal in Fabrication and Art  

Corrugated metal’s durability and aesthetic appeal, thanks to its ridged and grooved pattern, make it a favorite in both construction and artistic domains. Yet, cutting this material with a CNC plasma cutter introduces distinct challenges.

Navigating the Challenges of Cutting Corrugated Metal  

Automated torch height control (THC) systems, crucial to CNC plasma tables, depend on arc voltage to maintain an ideal torch-to-work surface distance, adjusting for any surface irregularities. The natural undulations of corrugated metal, with its alternating peaks and valleys, challenge these THC systems as the torch moves across the material.

Optimizing CNC Plasma Table Settings for Corrugated Metal  

Optimizing the use of a CNC plasma table for cutting corrugated metal requires careful adjustment of the machine’s settings. Key to this process is controlling the cutting speed.

  Techniques for Enhanced Precision  

Slowing down the X and Y axes allows the torch more time to adjust its height over the corrugated surface, ensuring accuracy. However, this reduced speed may lead to the accumulation of dross or slag on the underside of the cut, which may require additional cleanup.

Adjusting for Smooth Transitions  

Furthermore, it’s critical to adjust the speed of the torch height control’s (Z axis) to facilitate quick adaptation to the metal’s contours, ensuring smooth transitions over the corrugations. These strategies—moderating cutting speeds and enhancing Z-axis responsiveness—are fundamental in harnessing the full capabilities of the best plasma cutter for corrugated materials, thereby enhancing precision despite the challenges posed by the material’s unique texture.

How to Use CNC Plasma Table To Cut Corrugated Metal

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