Laser cutting: how does it work, what does it cost, and when is it the best choice?
Laser cutting is one of the most precise and versatile machining techniques in the modern manufacturing industry. This technology uses a concentrated laser beam to cut materials with extreme precision, enabling complex shapes and fine details that are difficult to achieve with traditional methods. For companies in the manufacturing industry, it is essential to understand when laser cutting is the optimal choice and how this technology compares to alternatives.
In this comprehensive guide, we cover every aspect of laser cutting: from the various technologies and their specific applications to the cost factors and comparisons with other cutting methods. We look at the latest developments in 2026 and offer practical advice for selecting the right laser technology for your production process.
How does laser cutting work?
Laser cutting works by using a concentrated beam of light so powerful that it can melt, vaporise or burn away material. The process begins with a laser that generates coherent light at a specific wavelength. This beam of light is focused through a lens into a very small spot, often just a few tenths of a millimetre in diameter.
The concentrated energy in this small spot heats the material locally to its melting or vaporisation point. At the same time, an assist gas is used to blow the molten material out of the cut. This assist gas can be oxygen for reactive cutting of steel, where additional heat is generated by combustion, or an inert gas such as nitrogen for non-reactive cutting of stainless steel and aluminium.
The cutting head moves along a pre-programmed path, controlled by a CNC system. The high speed and precision of these movements allow complex shapes to be cut with an accuracy of ±0.1 mm. The heat-affected zone (HAZ) remains minimal because the energy is applied very locally and the cutting speed is high.
Different types of laser systems
There are three main types of laser systems used in industry: fiber lasers, CO2 lasers and tube lasers. Each type has specific advantages and areas of application that determine the choice for different projects.
Fiber lasers are the most modern technology and use a glass fibre as the active medium. They typically operate at a wavelength of 1070 nanometres and are particularly efficient for cutting metals. The advantages of fiber lasers are their high energy efficiency (up to 30%), low maintenance costs and excellent cutting quality on thin to medium-thick plate.
CO2 lasers use a mixture of carbon dioxide, nitrogen and helium as the active medium and operate at 10,600 nanometres. This technology is traditionally strong in cutting thick steel plate and non-metals such as plastics, wood and textiles. Although CO2 lasers are less efficient on metal than fiber lasers, they remain relevant for specific applications.
Tube lasers specialise in cutting tubular profiles and are equipped with rotating clamping fixtures. These systems can produce complex cut-outs and shapes in tubes, profiles and beams, eliminating the need for manual machining.
Materials suitable for laser cutting
Laser cutting is applicable to a wide range of materials, with metals as the primary focus in the manufacturing industry. A material's suitability for laser cutting depends on factors such as thermal conductivity, reflectivity and chemical composition.
Carbon steel is the most commonly used material for laser cutting and delivers excellent results. Cutting speeds are high, edge quality is good and costs are relatively low. For 3 mm carbon steel, speeds of 8–12 metres per minute can be achieved with fiber lasers.
Stainless steel requires special attention due to its low thermal conductivity and high reflectivity. Nitrogen is often used as an assist gas to prevent oxidation and produce a bright cut edge. Different types of metal each have their own specific challenges when it comes to laser cutting.
Aluminium is challenging due to its high reflectivity and thermal conductivity, but fiber lasers have largely resolved these issues. Aluminium laser cutting tips can help optimise this process.
Copper and brass are possible but require special expertise due to their extremely high reflectivity at certain wavelengths. Modern fiber lasers with higher power make these materials more workable as well.
Costs and pricing structure of laser cutting
The costs of laser cutting vary considerably depending on the type of laser, material thickness and complexity of the project. For fiber lasers, hourly rates range between 60 and 180 euros, with various factors influencing this price.
The type of laser has a major impact on cost. Fiber lasers are generally more expensive to purchase but more efficient in use, resulting in lower operational costs per part. CO2 lasers have lower investment costs but higher operational costs, especially for thin metals.
Material thickness is a crucial cost factor. Thin plates (1–3 mm) can be cut quickly, while thick plates (20 mm+) require much more time and energy. Cutting speed drops exponentially as thickness increases, which directly affects costs.
Geometry complexity affects costs through the required programming time and cutting speed. Straight lines are faster to cut than complex curves and small holes. The number of piercings also has an influence, as each piercing takes time.
| Material thickness | Cutting speed (m/min) | Cost per metre | Applications |
|---|---|---|---|
| 1 mm steel | 15-20 | €2-4 | Fine sheet metal, electronics |
| 3 mm steel | 8-12 | €4-8 | General sheet metal, chassis |
| 6 mm steel | 4-6 | €8-15 | Construction work, brackets |
| 12 mm steel | 1.5-2.5 | €20-35 | Heavy structures, flanges |
| 20 mm steel | 0.8-1.2 | €40-70 | Machine building, special applications |
Comparison with waterjet cutting
Waterjet cutting is an important alternative to laser cutting, especially for thick materials and heat-sensitive applications. Both technologies have their specific advantages, and the choice depends on the specific requirements of the project.
Waterjet cutting as an alternative offers advantages for very thick materials where laser cutting is no longer economically attractive. Waterjet can cut materials up to 200 mm thick without heat influence, which is important for hardened steels or materials that must not lose their properties.
Laser cutting is faster on thin to medium-thick plate (up to about 25 mm) and has lower operational costs per part. Accuracy is comparable, but laser has advantages in automation and turnaround time.
Waterjet has a broader material range and can cut ceramics, glass, composites and hardened steel that are problematic for laser. Waterjet cut edges are also smoother and require less post-processing.
Costs differ considerably: laser cutting is cheaper for production runs of thin plate, while waterjet can be more economical for thick plate or small batches of special materials.
Quality factors and accuracy
The quality of laser cutting is determined by various factors including accuracy, edge quality and repeatability. Modern laser systems achieve a positional accuracy of ±0.1 mm, but the actual accuracy depends on material, thickness and process parameters.
Edge quality is assessed against various criteria: straightness of the cut edge, surface roughness, and absence of burr. With optimal parameters, a surface roughness of Ra 3.2 μm can be achieved, which is often directly usable without post-processing.
The heat-affected zone (HAZ) is a critical factor, especially for materials that must retain their metallurgical properties. Fiber lasers produce a minimal HAZ thanks to their high cutting speeds and concentrated energy.
Repeatability is essential for production runs. Modern CNC-controlled laser systems can produce thousands of identical parts with consistent quality, provided the process parameters are correctly set and maintained.
Applications in the manufacturing industry
Laser cutting is widely applied in virtually all sectors of the manufacturing industry, from automotive to aerospace and from furniture manufacturing to medical equipment. The versatility of the technology makes it suitable for both prototyping and mass production.
In the automotive industry, laser cutting is used for body parts, chassis components and decorative elements. The high speed and accuracy are essential for the large volumes and strict quality requirements in this sector.
Aerospace applications require the highest precision and quality. Laser cutting is used for structural components, heat shields and complex brackets where weight saving is crucial.
In metalworking in the Netherlands, laser cutting has become a standard production process for a wide range of applications, from furniture parts to industrial machines.
Architectural applications take advantage of the ability to cut complex decorative patterns in facade panels, balustrades and artistic elements. Creativity is virtually unlimited thanks to the flexibility of the process.
| Industry | Typical applications | Material thickness | Volume |
|---|---|---|---|
| Automotive | Chassis, brackets, decoration | 1-6 mm | High |
| Aerospace | Structural, heat shields | 1-12 mm | Low-medium |
| Furniture industry | Frames, decorative panels | 1-3 mm | Medium |
| Medical equipment | Instruments, housings | 0.5-3 mm | Low-medium |
| General industry | Brackets, flanges, panels | 2-20 mm | Variable |
Advantages and limitations
Laser cutting offers unique advantages but also has specific limitations that determine its range of applications. Understanding these factors is crucial for making the right choice for your production process.
The primary advantages are high accuracy, complex shaping capabilities, and fast processing times on thin materials. The minimal heat influence and narrow kerf lead to material savings and less post-processing.
Flexibility is a major advantage: design changes can easily be implemented by adjusting the CAD file, without expensive tooling. This makes laser cutting ideal for prototyping and small batches.
Automation possibilities are excellent, with unmanned production possible through automated material handling and quality control systems. This reduces labour costs and increases consistency.
Limitations include the maximum material thickness (typically up to 25–30 mm for economic workability), difficulties with highly reflective materials, and the investment in equipment and training.
Energy costs can be considerable, especially for thick materials that require a lot of power. This must be weighed against the savings in labour costs and material efficiency.
What are the main advantages of laser cutting over traditional cutting methods?
Laser cutting offers superior accuracy of ±0.1 mm, much higher cutting speeds (8–12 m/min for 3 mm steel), and the ability to cut complex shapes without changing tools. The minimal heat influence ensures better material properties, and the narrow kerf (0.1–0.3 mm) saves material. In addition, there is no physical tool wear and designs can be quickly adapted without new tooling.
Which material thickness is most economical for laser cutting?
For fiber lasers, the economic optimum lies between 1–12 mm material thickness. With 3 mm steel, the best speed/quality ratios are achieved at 8–12 m/min cutting speed. Above 20 mm, laser cutting becomes exponentially more expensive due to lower cutting speeds and higher energy requirements. For very thick materials (>25 mm), alternatives such as waterjet cutting are often more economical.
How does a fiber laser differ from a CO2 laser in practical applications?
Fiber lasers are 3–5 times more energy-efficient than CO2 lasers and cut metals faster and more accurately. They have lower maintenance costs (no mirrors or gas mixtures) and a longer lifespan. CO2 lasers still excel with thick steel plate (>15 mm) and non-metal materials. Fiber lasers cost 60–120 euros/hour while CO2 lasers cost 80–180 euros/hour, including higher energy costs.
Which assist gases are used and why?
Oxygen is used for reactive cutting of carbon steel, where additional heat is generated by combustion, resulting in higher cutting speeds. Nitrogen is used for non-reactive cutting of stainless steel and aluminium, producing oxidation-free, bright cut edges. Argon is used for special materials such as titanium. The right assist gas determines both cutting quality and cost.
What determines the quality of the cut edge in laser cutting?
Edge quality is determined by laser power, cutting speed, focal position and assist gas pressure. Optimal parameters produce a straight, smooth cut edge with minimal roughness (Ra 3.2 μm). Too high a speed causes striping; too low a power causes burr formation. The heat-affected zone must remain minimal (typically 0.1–0.2 mm) to preserve material properties. The correct focus position is crucial for consistent cutting quality through the plate thickness.
When is waterjet cutting a better alternative than laser cutting?
Waterjet cutting is more advantageous for material thicknesses above 25 mm, heat-sensitive materials (hardened steels, titanium), materials that must not lose their properties, and extremely precise tolerances (<±0.05 mm). It is also suitable for materials that laser cannot cut, such as ceramics, glass and certain composites. Waterjet produces no heat-affected zone and gives smooth cut edges without post-processing, but it is slower and more expensive with thin plate.
How is the cost of a laser cutting project calculated?
The cost consists of: machine time (60–180 euros/hour depending on the laser type), material costs, programming work for complex shapes, machine setup time, assist gas consumption and any post-processing. Cutting length and the number of piercings determine the machine time. Fiber lasers are cheaper for thin materials, CO2 for thicker plate. Efficient nesting (part arrangement) on the plate significantly reduces material waste and costs.
What developments are there in laser technology for 2026?
Key trends are higher-power fiber lasers (up to 30 kW+) for thicker materials, improved beam quality for better cut edges, intelligent process control with real-time monitoring and adaptive optics for variable material thickness. Green lasers are gaining ground for reflective materials such as copper. Automation is increasing with robot-integrated systems and AI-driven quality control. Energy efficiency continues to improve with new laser concepts and recovery systems.
Laser cutting remains one of the most important technologies in the modern manufacturing industry. The combination of high accuracy, speed and flexibility makes it indispensable for a wide range of applications. With continuous developments in laser technology, automation and process optimisation, this technology continues to evolve to meet the growing demands of industry.
For companies considering investing in laser cutting or optimising their current processes, it is essential to choose the right technology based on specific applications, materials and production volumes. A thorough analysis of the costs and benefits, taking into account all the factors we have discussed, will lead to the best decision for your production process.
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