IS A PLASMA TABLE THE RIGHT TOOL FOR ALUMINUM CUTTING?
November 5th, 2025
In the rapidly advancing world of metal fabrication, the question is no longer just whether a machine can cut aluminum, but how fast and precisely it can do so. While plasma remains a powerhouse for heavy duty applications, the arrival of ultra high power fiber lasers like the Machitech Fiber Prime S has completely redefined the industry hierarchy.
The Evolution of the Cutting Process
The fundamental plasma process uses a high velocity jet of ionized gas to conduct electricity and melt through conductive metals. However, for shops demanding the highest level of throughput, the conversation has shifted toward 40kW to 60kW fiber laser sources. These high power lasers now rival and often surpass plasma in speed and thickness capacity, particularly on non ferrous metals like aluminum.
Modern Material Compatibility and Technology
Fabricators now choose between three primary technologies based on the specific requirements of the project.
- Ultra High Power Fiber Laser (40kW to 60kW): The new standard for high speed, high precision cutting. Systems like the Fiber Prime S can process thick aluminum and steel plate with a verticality and edge quality that legacy lasers could never achieve.
- CNC Plasma: Still the go to for heavy industrial "severance" cutting and applications where the lower initial equipment cost is a primary factor.
- CNC Routers: Essential for 3D pocketing, engraving, or aluminum applications where a "cold cut" is required to maintain the material's temper without any heat affected zone.
Overcoming Legacy Limitations
Historically, aluminum’s reflectivity and thickness were barriers for lasers. Modern 60kW sources have rendered these issues obsolete.
- Reflectivity: High power fiber lasers use advanced beam geometry to safely cut reflective aluminum and copper without risk to the machine.
- Non Conductive Materials: While plasma and lasers are thermal processes, CNC routers remain the necessary choice for wood, glass, or plastics.
- Hardened Metals: While plasma struggles with specialized hardened alloys, high power lasers provide the concentrated energy needed to slice through them with minimal distortion.
Why High Power Laser is Gaining Ground
While plasma is a staple due to its versatility and ability to handle rusted or scaled plate, the Fiber Prime S offers a competitive edge for high volume shops:
- Speed: In the 0.5" to 1.5" range, a 60kW laser can outperform plasma in parts per hour by a massive margin.
- Precision: Achieves intricate details and perfectly square edges on thick plate that once required secondary machining.
- Cleanliness: Laser cuts are so clean they typically eliminate the need for secondary grinding or deburring.
An Unmatched Option for Modern Industry
The Machitech lineup ensures that whether you need the rugged versatility of a Diamond Cut plasma table or the raw, high speed power of a 60kW Fiber Prime S, you have the right tool for the job. Plasma remains an indispensable tool for heavy duty tasks, but for those looking to lead the market in precision and speed, ultra high power laser technology is the new industrial benchmark.
