Fiber laser vs CO2 laser vs plasma: which is best for cutting metal?

Many Pakistani workshops still cut metal with plasma, and some use CO2 lasers. Fiber laser technology has become the standard for sheet metal around the world. Here is how the three compare.

Fiber laser

A fiber laser creates its beam in a solid-state source and delivers it to the cutting head through a flexible fiber cable. Metals absorb this wavelength very well, so it cuts steel, stainless steel, aluminium, brass and copper efficiently.

• Speed: very fast on thin and medium sheet.
• Accuracy: narrow kerf and clean edges, ideal for jali and precision parts.
• Running cost: high electrical efficiency and few consumables.
• Maintenance: no mirrors to align and no laser gas to refill.

CO2 laser

CO2 lasers are excellent for non-metals such as acrylic, wood, MDF, fabric and leather. They can cut metal, but they use more electricity, cut metal more slowly than fiber lasers of similar power, and need mirror alignment and more maintenance. For a metal workshop, fiber is the better choice; for acrylic and wood signage, CO2 is still useful.

Plasma

Plasma machines are cheaper to buy and can cut thick plate, but the cut is wider, edges are more tapered, small holes and fine details are poor, and consumables (nozzles and electrodes) wear quickly. Parts usually need grinding afterwards.

Which should you choose?

• Sheet metal, jali, signage, enclosures, precision parts: fiber laser.
• Acrylic, wood and other non-metals: CO2 laser.
• Only very thick plate with rough tolerance and a tight budget: plasma.

For most metal workshops, a fiber laser pays for itself through faster cutting, less rework and less wasted material. Contact us to see a fiber laser cutting your own parts.

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