For regular sheet-metal cutting, fibre laser is normally the right machine. It is designed for mild steel, stainless, aluminium and other suitable metals. A standard CO₂ laser belongs in a different part of the workshop, cutting and engraving acrylic, wood, MDF, card and approved plastics.
List the grades, thicknesses and sheet sizes that fill a normal month. If most are metal, compare Vector and Titan fibre lasers. If acrylic, timber or engraving provides most of the work, compare the Lasertech CO₂ range.
If the comparison points towards fibre, explore our fibre laser cutters. Materials better suited to non-metal cutting may still favour a CO₂ laser machine. The fibre laser power guide explains how output should reflect material thickness and production speed. You can also review typical laser cutting applications before choosing a platform.
Start with the material you cut every day
- Mostly mild steel, stainless or aluminium sheet — start with fibre laser.
- Mostly acrylic, timber, MDF, card or engraving work — start with CO₂.
- Regular metal and non-metal work — price the two workloads separately before trying to force both through one machine.
If you are comparing technologies beyond sheet metal, read the general fibre vs CO₂ laser guide first. If metal dominates, start on the fibre laser cutters hub.
How fibre laser cutting works for sheet metal
A fibre source sends the beam through a fibre-optic cable to the cutting head. The focused beam melts the programmed path while oxygen, nitrogen or clean compressed air removes molten metal from the kerf. The gas affects the edge as well as the cutting cost.
Typical parts include brackets, panels, guards, enclosures and metal sign components. Mild steel, stainless and aluminium are everyday fibre-laser materials. Brass and copper also need a machine and cutting head specified for reflective metal.
Where CO₂ laser cutters fit
CO₂ lasers are well suited to acrylic, wood, MDF, card, leather, approved plastics and engraving work. They are widely used for signs, displays, prototypes, packaging samples and classroom projects. Standard Lasertech Desktop, Pro and Large Format machines are not intended for production metal cutting.
Explore Desktop, Pro and Large Format on the CO₂ laser hub. The specialist M-CUT has a limited thin-metal scope covered later in this guide.
Fibre laser vs CO₂ laser for sheet metal: comparison table
| Buyer question | Fibre laser | CO₂ laser | What it means for sheet metal buyers |
|---|---|---|---|
| Suitable materials | Mild steel, stainless, aluminium, brass and copper on a suitable specification | Acrylic, wood, MDF, card, leather and approved plastics | Choose around the material that provides most of the work |
| Cutting speed on suitable metals | Built for fast profiling and piercing of fabrication sheet | Standard machines are not specified for production metal | Compare timed nests on your normal grades and thicknesses |
| Edge quality | Repeatable metal profiles when gas, focus and parameters are set correctly | Clean acrylic edges and detailed engraving on suitable non-metals | Judge the edge required by welding, coating or assembly |
| Running costs | Electricity, assist gas, nozzles, lenses, extraction and servicing | Electricity, tube life, optics, extraction and servicing | Use your cutting hours and gas choice; neither process runs without consumables |
| Maintenance considerations | No CO₂ tube or mirror path; the cutting head, chiller and extraction still need care | Tube condition, mirror alignment and clean optics affect performance | Plan maintenance around the actual machine, not a “maintenance-free” claim |
| Reflective metals | Cut on suitable machines with reflection protection and correct settings | Outside the normal scope of standard Lasertech CO₂ machines | Tell the supplier when aluminium, brass or copper is regular work |
| Bed size and production workflow | Compact Vector cells through to Titan 3015, 4020 and 6025 flatbeds | Desktop, Pro and Large Format beds for non-metal sheets | Choose a bed that accepts the stock and nests you buy regularly |
| Typical buyer profile | Fabricators, engineering shops and metal-cutting subcontractors | Sign makers, schools, makers and non-metal workshops | One mixed enquiry should not determine the main machine |
Which materials are you cutting?
- Mild steel brackets, panels and enclosures — fibre flatbed.
- Stainless parts needing an oxide-free edge — fibre with nitrogen where the finish requires it.
- Aluminium, brass or copper — fibre with reflection protection confirmed in the specification.
- Acrylic signs, timber parts and engraved products — CO₂.
- Both groups every week — consider separate machines or test M-CUT against its stated limits.
Choosing fibre laser power for sheet metal
Choose power from the metals and thicknesses that fill the cutting schedule. More kW can reduce piercing and cutting time on suitable work, but it also changes the gas, extraction and services the installation needs. Decide bed size and power together, then test representative parts.
Read the fibre laser power guide for a UK-focused walkthrough of each tier, then model ownership on the fibre laser ROI calculator and our fibre laser cost guide before you request a quote.
Machine choice: compact fibre laser or larger production bed?
Vector covers compact and mid-sized enclosed beds. Titan provides larger production formats, including 3015, 4020 and 6025 flatbeds. Buy the bed for the sheet and finished parts you handle; a larger table does not improve a nest that already fits.
Compare Vector FL60, FL90 and the Titan N Series on the fibre laser hub.
When a CO₂ laser may still be the better buy
Choose CO₂ when acrylic, timber, MDF, card or engraving provides most of the work. A sign maker may need CO₂ for acrylic letters and fibre for aluminium trays. Those are different jobs, and two correctly specified machines can be more useful than one compromise.
The exception is Lasertech M-CUT. Its verified scope is mild steel up to 2 mm and stainless up to 1 mm with oxygen assist. It also needs advanced filtration with spark arrest. Use it for a genuine mixed-material requirement, not as a substitute for a production fibre laser.
What to bring to a cutting trial
Bring the grades and thicknesses you buy, a normal nest file and a few finished parts. State whether edges go straight to welding, coating or assembly. Include weekly hours and the amount of non-metal work. A timed test will tell you more than a maximum-thickness headline.
Compare fibre laser cutters and CO₂ laser cutters. For advice, call UK: 0121 541 1444 · Ireland: (+353) 83 804 8820.
Useful next reads
- General fibre vs CO₂ laser guide
Compare the two processes when sheet metal is not the main decision.
- Fibre laser cutting guide
Understand the cutting process and compare Vector with Titan.
- Fibre laser power guide
Match power to the thicknesses and cutting hours in your workshop.
- Cutting stainless and aluminium
Plan assist gas, edge finish and reflective-metal protection.
- Fibre laser cost guide
Review gas, extraction, servicing and other ownership costs.
Frequently asked questions
Is fibre laser better than CO₂ for sheet metal?
Usually, yes. Fibre is designed for mild steel, stainless, aluminium and other suitable metals. CO₂ is the better fit when acrylic, timber, MDF, card or engraving provides most of the work.
Can a CO₂ laser cut metal?
Standard Lasertech CO₂ machines are not production metal cutters. M-CUT can cut mild steel up to 2 mm and stainless up to 1 mm with oxygen assist and the specified spark-arrest filtration.
What metals can a fibre laser cutter cut?
Mild steel, stainless and aluminium are common. Brass and copper can also be cut on suitable machines. Confirm power, head protection, gas and parameters for the grades and thicknesses you use.
What power fibre laser do I need for sheet metal?
Match power to your regular grades, thicknesses, cutting hours and gas choice. Test a normal nest, then use the fibre laser power guide to compare the suitable tiers.
Should I buy a fibre laser or CO₂ laser for my workshop?
Choose fibre for regular sheet metal. Choose CO₂ for non-metal cutting and engraving. If both workloads are substantial, compare two machines with the cost and limitations of a compromise setup.
