Micro TIG welding vs fiber laser: a comparison of the Lampert Micro Arc Welder
In short: For repair, mobile use and small to medium batch sizes, the Lampert Micro Arc Welder is the much more cost-effective choice with comparable seam quality for most applications. The fiber laser is worthwhile for high-volume series with constant geometry and a fully automated production line.
The most common purchasing decision question in industrial applications: Micro TIG welding (also known as micro pulse welding or micro TIG) or fiber laser? Both processes deliver low-distortion, rework-free weld seams; the difference lies in investment, mobility, workpiece flexibility and safety requirements. This comparison shows when the Lampert Micro Arc Welder is the economically better choice and when the fiber laser investment is worthwhile.
How the two methods differ
Fiber laser
A laser beam guided in the fiber is focused on the material via an optical system. The high energy density vaporizes or melts the metal in a very small spot. Fiber lasers are energy-efficient, can be automated and are ideal for series production with consistent geometry. Acquisition from approx. EUR 12,000 for a professional handheld system, with stationary and automated systems typically EUR 20,000 to 80,000 and up, plus protective cabin, filter system and, if necessary, laser safety officer.
Lampert Micro Arc Welder (MAW)
An electronically ignited arc transfers energy to the workpiece via a tungsten electrode under argon inert gas, in individual pulses of 0.1 to 34 milliseconds. The metallurgical process of melt formation is identical to the laser, only the energy source differs. Acquisition from approx. 7,000 EUR, mobile table design, eye protection standard with CE conformity, no cabin required.
The key question is rarely which process is technically better, but which one suits my volume, my workshop size and my investment framework.
Detailed comparison
| Criterion | Lampert Micro Arc Welder (MAW) | Fiber laser |
|---|---|---|
| Acquisition | from approx. 7,000 EUR | from approx. 12,000 EUR, stationary up to 80,000 EUR |
| Operating costs | low (argon, electrodes) | medium (maintenance, optics, filters, argon) |
| Quality of results | very good | very good |
| Minimum material thickness | 0.1 mm | < 0.1 mm displayable (depending on optics and pulse regime) |
| Heat input | minimal (pulses) | minimal (focused) |
| Warpage | very low | very low |
| Variety of materials | Very high (12 material programs) | very high |
| Aluminum | dedicated (aluminum mode) | possible, with setup effort |
| Mobility | 10.9 kg, portable | Stationary system |
| Workpiece size | unlimited (device comes to the workpiece) | limited by working chamber |
| Protective measures | Standard eye protection (microscope or helmet) | Laser housing, special goggles, laser safety officer if necessary |
| Teach-in curve | very fast (1 to 2 hours) | medium to high |
| Maintenance effort | low | higher (optics, adjustment) |
| Space requirement | Desktop unit | System with protective cabin |
| Series production | Limited suitability (mostly for stitching applications) | Very suitable |
| repair work | ideal | good (stationary) |
| Inert gas | Argon (inexpensive, automatically regulated) | Argon or sometimes not required for the process |
Inert gas in process comparison
Lampert Micro Arc Welder: Argon ≥ 99.9 % (Argon 4.6), approx. 2 l/min, automatic pre- and post-flow. A 10 l bottle typically lasts several weeks to months. Operating costs low and predictable.
Fibre laser: Inert gas is not absolutely necessary for the process because the focused laser beam does not ionize the atmosphere via an arc. Nevertheless, a cross-jet (compressed air) or argon veil is often used, especially to protect the focus optics from smoke and for oxidation-sensitive materials (titanium, stainless steel in visible seams).
Practical consequence: both processes require argon for titanium, stainless steel and reactive materials, only the logistics differ. For stainless steel in repair stores without visual requirements, fiber lasers can work without inert gas, which saves on argon logistics but increases the risk of tarnishing.
When the Lampert Micro Arc Welder is the better choice
- Budget-sensitive decision if purchase and amortization are the main focus.
- Mobile use directly on the workpiece. Service, workshop repairs, large components that do not fit into a laser cabin.
- Small to medium batch sizes and repair work.
- Flexible materials with frequent changes, the 12 pre-installed programs cover stainless steel, titanium, aluminum (with dedicated mode), copper, precious metals, nickel-based.
- Getting started without a great deal of training, the Micro Arc Welder can be operated safely in 1 to 2 hours and good initial results are achieved immediately.
- Companies without space for stationary laser systems.
- Backup system in addition to the existing laser, the typical hybrid workshop
When the fiber laser has advantages
- Very high series volumes with consistent parameters and geometry.
- Material thicknesses of less than 0.1 mm, for example for microbatteries or certain sensor designs.
- Fully automated production lines with PLC control and robot integration.
- Applications without argon logistics, if the material is not sensitive to oxidation and no argon supply is required.
- Very fine welding points in electronic components, where the focused laser beam can be limited more finely than an arc.
In practice, the two processes often complement each other: Micro Arc Welders for development, prototypes, repairs and small series, fiber lasers for high-volume production as soon as the annual volume justifies the laser investment.
Economic efficiency (reference values)
| Position | Lampert Micro Arc Welder | Fiber laser |
|---|---|---|
| Equipment purchase | from approx. 7,000 EUR | from approx. 12,000 EUR, stationary up to 80,000 EUR |
| Extensions (cabin, filter) | not required | typically 5,000-15,000 EUR |
| Annual operating costs | low (argon, electrodes) | medium (maintenance, optics) |
| Training | 1 to 2 hours initial training, optional free one-day course | several days + operator certification |
| Amortization repair shop | very fast | longer |
| ROI for large series | limited | very high |
Prices are approximate and vary depending on the configuration. Current Lampert prices and configurations on request.
Additional effort for laser systems
The laser source of a fiber laser must be classified as class 4 according to DIN EN 60825-1, which entails a series of mandatory measures that are often underestimated in the investment and operating cost calculation:
- Complete encapsulation of the work area (laser protection housing, extraction with filter system if necessary).
- Special laser safety goggles of the appropriate wavelength class for every operator and visitor to the area.
- Regular maintenance and inspection of the system by certified personnel.
- Laser safety officer in the company (depending on size and system).
- Documentation obligations in accordance with the OStrV (Ordinance on Protection against Artificial Optical Radiation) in conjunction with the TROS Laser Radiation.
With the Lampert Micro Arc Welder, standard Lampert eye protection or suitable filter goggles are sufficient, no safety cabin, no laser safety officer, no additional documentation beyond the usual workshop instruction.
Frequently asked questions about the Micro Arc Welder vs. fiber laser comparison
The metallurgical process is comparable in most applications. Fiber lasers can have advantages with extremely thin materials (< 0.1 mm) and very high series volumes, but the results are equivalent for the vast majority of industrial repairs and small to medium series.
A professional handheld fiber laser starts at approx. 12,000 EUR; stationary systems typically run 20,000 to 80,000 EUR and up. The Micro Arc Welder starts at approx. 7,000 EUR. In addition, the laser requires a protective cabin, filter system and operator training if necessary.
No. The Micro Arc Welder works with an electric arc, not with laser radiation. Eye protection and general workshop specifications are sufficient, no cabin, no laser safety officer.
Yes, very good. The MAW has a dedicated aluminium mode with an optimized welding curve.
Very common practice: micro-TIG welding for repairs, individual pieces, mobile applications and small series. Fiber laser for high-volume series production. The two devices complement each other and together cover the entire range of applications.
The MAW typically involves a day at the Lampert workshop in Werneck, where you can bring your own workpieces. Fiber lasers usually require several days of training and operator certification.
Yes, micro-TIG welding is well suited for gas- and liquid-tight seams on capsules, sensor housings and small components, with low heat input and cleanly reproducible seams. Fiber lasers are also used for this, but are usually only worthwhile for large quantities. Read more: Tightly welding capsules and housings.
The Lampert application team at [email protected]. Free sample welding with a written welding report is possible; this is the fastest way to obtain reliable data when making process decisions.
Conclusion: comparable results, significantly lower costs
In the vast majority of industrial applications, the Lampert Micro Arc Welder delivers results that are on a par with fiber lasers, at a fraction of the acquisition cost, without a protective cabin and with a significantly shorter training period. The Micro Arc Welder shows its strengths where mobility, material diversity and investment framework drive the decision.
Fiber lasers remain the right choice if the number of pieces, geometry consistency and degree of automation justify the investment. The typical hybrid workshop uses both processes in parallel. Micro Arc Welder for development and repair, laser for series production.
For a test weld on your components, please contact us at [email protected]. A written welding report is enclosed with every sample weld.
All technical data on the device can be found on the Lampert Micro Arc Welder product page.
Status: June 2026, Lampert Werktechnik GmbH, Werneck.