Micro TIG welding vs fiber laser: a comparison of the Lampert Micro Arc Welder
In short: For repairs, mobile applications, and small- to medium-sized batch sizes, the Lampert Micro Arc Welder is the significantly more cost-effective choice, offering weld quality comparable to that of other methods for most applications. The fiber laser is the better choice for high-volume production runs with consistent geometry and a fully automated production line.
The most common question when making a purchasing decision for industrial applications: Micro-TIG welding (also known as micro-pulse welding) or fiber laser? Both processes produce welds with minimal distortion and no need for rework; the difference lies in investment costs, mobility, workpiece flexibility, and safety requirements. This comparison shows when the Lampert Micro Arc Welder is the more cost-effective choice and when investing in a fiber laser is worthwhile.
How the two methods differ
Fiber laser
A laser beam guided through a fiber is focused onto the material via an optical system. The high energy density melts the metal at a very small spot. Fiber lasers are energy-efficient, can be automated, and are ideal for series production with consistent geometry. Prices start at approximately 12,000 EUR for a professional handheld system; stationary and automated systems range from 20,000 to 80,000 EUR and up, plus a safety enclosure, a filtration system, and, if necessary, a 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 rather which one suits my production volume, the size of my workshop, and my budget.
Detailed comparison
| Criterion | Lampert Micro Arc Welder (MAW) | Fiber laser |
|---|---|---|
| Purchase | starting at approx. 7,000 EUR | Starting at approx. 12,000 EUR, stationary models 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.
Fiber lasers: Inert gas is not strictly 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 curtain is often used, primarily to protect the focusing optics from soot and for materials susceptible to oxidation (titanium, stainless steel in exposed seams).
Practical implication: For titanium, stainless steel, and reactive materials, both processes require argon; the only difference is in the logistics. For stainless steel in repair shops where visual inspection is not required, the fiber laser can operate without an inert gas, which eliminates the need for argon logistics but increases the risk of discoloration.
When the Lampert Micro Arc Welder is the better choice
- A Budget-conscious decision:
When purchase price and payback are the top priorities. - On-site service directly at the workpiece:
Service, workshop repairs, large components that do not fit inside a laser enclosure. - Small to medium batch sizes and repair work.
- Flexible materials with frequent changes; the 12 preinstalled programs cover stainless steel, titanium, aluminum (with a dedicated mode), copper, and precious metals.
- Einstieg ohne großen Schulungsaufwand:
Der Micro Arc Welder ist in 1 bis 2 Stunden sicher bedienbar, erste gute Ergebnisse gelingen sofort. - Companies without space for stationary laser systems.
- A backup system in addition to the existing laser, as found in a 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 | starting at approx. 7,000 EUR | Starting at approx. 12,000 EUR, stationary units up to 80,000 EUR |
| Add-ons (cab, 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 Work for Laser Systems
The laser source of a fiber laser is classified as Class 4 according to DIN EN 60825-1. This entails a number of mandatory measures that are often underestimated in calculations of investment and operating costs:
- 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 requirements under the OStrV (Ordinance on protection against artificial optical radiation)
in conjunction with the TROS on Laser Radiation.
For the Lampert Micro Arc Welder, standard Lampert eye protection or suitable safety goggles are sufficient. A safety enclosure, a laser safety officer, or additional documentation beyond the standard workshop training are not required.
Frequently asked questions about the Micro Arc Welder vs. fiber laser comparison
The metallurgical process is similar in most applications. A fiber laser may offer advantages when working with extremely thin materials (< 0.1 mm), and for very high production volumes; however, for the vast majority of industrial repairs and small- to medium-volume production runs, the results are comparable.
A professional handheld fiber laser starts at approximately 12,000 EUR; stationary systems typically range from 20,000 to 80,000 EUR and up. The Micro Arc Welder starts at approximately 7,000 EUR. In addition, laser systems require a safety enclosure, a filtration system, and, if necessary, operator training.
Nein. Der Micro Arc Welder arbeitet mit einem Lichtbogen, nicht mit Laserstrahlung. Augenschutz und allgemeine Werkstattvorgaben reichen, keine Kabine, kein Laserschutzbeauftragter.
Yes, very good. The MAW has a dedicated aluminum mode with an optimized welding curve.
A very common practice: micro-TIG welding for repairs, one-off parts, mobile applications, and small-batch production. Fiber lasers for high-volume production. The two machines complement each other and, together, cover all applications from one-off parts to mass production.
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, offering low heat input and a consistently reproducible seam. Fiber lasers are also used for this purpose, but they are usually cost-effective only for high-volume production. Learn more: Sealing capsules and housings.
The Lampert Application Team at [email protected]. Free sample welding with a written welding report is available. When deciding on a process, this is the fastest way to obtain reliable data.
Conclusion: comparable results, significantly lower costs
In most industrial applications, the Lampert Micro Arc Welder delivers results on par with those of a fiber laser, at a fraction of the upfront cost, without the need for a safety enclosure, and with a significantly shorter training period. The Micro Arc Welder really shines in situations where mobility, material versatility, and budget constraints are key factors in the decision-making process.
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.