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Fiber laser welding of metals

Welding metal with light

Today, welding is an innovative assembly technique used in all areas. While the technique itself is widespread, some of its processes are as yet not so well known and underused. Laser welding falls into that category this despite its reputation as a complex process, it offers unparalleled advantages, in terms of speed, technique and costs.

What is wobble laser welding?

Trepanning fiber laser head

Standard laser welding heads are designed to focus a collimated laser beam to ONE required spot size, keeping the beam path static. This standard configuration limits each setup to ONE specific application.
Our Wobble heads, on the other hand, incorporate scanning mirror technology inside our weld head. By moving the beam with internal mirrors or rotating lenses, the focal spot is no longer static and can be dynamically adjusted by changing the shape, amplitude and frequency.


Wobble welding


Laser stir welding (LSW) 


Trepanning laser welding 

WOBBLE - Fiber laser welding

Handheld fiber laser welding machine

FAST, ECONOMICAL and SAFE hand welding with a fiber laser light beam

A Handheld fiber laser welding machine is a new type of high-power, high-end continuous welding tool which adopts a high-quality fiber laser source to produce a fiber optic light beam. After transmission processing, the light is focused on the workpiece to achieve continuous welding. It avoids the two thresholds of thermal strain and post-treatment, and is environmentally friendly and pollution-free, greatly improving the joint strength and quality of welding.
Replacing the traditional arc welding with a hand-held fiber laser welding machine will not only facilitates the welding of molds, advertising characters, kitchen utensils, doors and windows, etc. but also makes laser welding possible in outdoor operations, which indicates that this traditional welding of electric welding, argon arc welding, etc. will soon be replaced by our wobble laser welding.

WOBBLE-3 ® Series: Full CE Certified

Laser Beam Welding Vs Laser Beam Wobble Welding (or Laser beam stir welding)

Laser Beam Welding (LBW) is a material-joining technique that applies laser radiation to melt the base material and create the welding joint. Laser beam welding process is related to other traditional welding methods, such as electron beam welding (EBW), tungsten plasma arc welding (PAW), or inert gas tungsten arc welding (TIG).
Laser beam welding applies a high power industrial laser to create a narrow and deep melt pool between the parts to be welded. A laser is a highly concentrated heat source that can be easily automated and installed on industrial welding cells or mounted in a handheld gun like our wobble-3, providing high welding speeds for many industrial applications.
Nevertheless, factors such as the laser beam quality or the processed materials have a great influence on the resulting geometry, microstructure, and residual stress distribution. Therefore, final results are directly dependent on the process input parameters, which means that process parameters must be carefully selected for achieving the desired quality.
Laser Stir Welding (LSW) - (LWW Laser Wobble Welding) utilizes some form of beam manipulation to oscillate the keyhole or vapor cavity within a larger molten pool. It requires a relatively high rate of manipulation, which may be represented by circular motion or some other pattern. The manipulation of the beam, and its corresponding oscillation of the vapor cavity within the molten pool, is utilized in conjunction with the motion used for the welding path.

The wobble method produces a superior weld by greatly reducing imperfections, increasing consistency, reducing material cost and providing more tolerance for process variables.

The welds produced using the laser stir welding (LSW) process, in general, exhibited a wider fusion zone than the welds produced without beam manipulation.

WOBBLE-3 ® Series

The killer of electric welding and argon arc welding

Handheld fiber laser welding offers a fast, economical and contact-free alternative for welding a wide variety of metals in virtually every industry. Whether you require, high processing speed, complex weld geometries or multi-layer joints, our Wobble-3 provides unique solutions for a diverse range of welding applications.

WOBBLE-3: We offer the best of three worlds in ONE machine!

Two classes of fiber laser welding for different product design needs in ONE machine

More info on our Wobble-3

New: Wobble-3Plus


WOBBLE-3-Plus: We offer the best of three worlds in ONE machine!

Two classes of fiber laser welding with adjustable wobbling diameter and a fiber laser cutting function in ONE machine

More info on our Wobble-3Plus

Wobble-3 Handheld fiber laser welder

Probably the best portable fiber laser welder in the world

Welding fume is a known carcinogen that can lead to lung cancer, according to the International Association for Research on Cancer (IARC).

Safety and Health

No words needed here!


Where do you want to work?

Where does your team want to work?

Our Wobble fiber laser welder gives you back the POLE position!

Comparison Welding: We beat them ALL

Comparison welding
Traditional welding
Laser welding
Wobble-3 laser welding
Heat input to the workpieceVery highLowVery Low
Deformation of the workpiece, undercutBigSmallVery Small
Bond strength to base metalGeneralGoodVery good
Follow up treatmentPolishingRarely need polishingNo need or rarely need polishing
Welding speedGeneralMore than 2 times arc weldingMore than 2 times arc welding
Applicable materialStainless Steel, Carbon steel, Galvanized sheetStainless Steel, Carbon steel, Galvanized sheetStainless Steel, Carbon steel, Galvanized sheet,...
ConsumablesMore consumablesLess consumablesLess consumables
Operation difficultyComplicatedGeneralSimple
Operator safetyUnsafetySafetySafety is VERY High
Environmental protection impactNot environmentally friendlyEnvironmentally friendlyEnvironmentally friendly
Welding fault toleranceGoodBadVERY Good
Wobble/Swing weldingNoNoYes
Spot width adjustableNoNoYes
Welding quality comparisonBadGeneralVery Good

Benefits of fiber laser welding

Above all, the use of laser welding for metal parts improves productivity by reducing the time spent on welding and straightening the welded parts and allows greater freedom in the designing of parts (simpler assemblies). Laser welding also helps make savings by reducing production costs and the materials consumed by the welding process. This welding method also affects the quality of the assembly by offering mechanical strength that is at least equal to that of the base material, and by reducing the part deformation rate. Laser welding is also an excellent solution for joining subassemblies of dissimilar parts or treated parts (carbonitrided, case hardened, etc.).


  • Welding productivity can increase by up to 800 %
  • Reproducible process
  • Reduction or even elimination of the time for straightening welded pieces
  • Overall reduction of production costs
  • Mechanical resistance at least equivalent to that of the base metal
  • Reduction of welding consumables
  • Great freedom in the designing of parts
  • Fume and smoke drastically reduced
  • Few splatters and flames
  • Drastic reduction of post-processing (cleaning, grinding,...)
  • Welding of dissimilar materials (steel to cast iron, stainless steel to Inconel, etc.)
  • Welding of precious materials
  • Welding close to delicate components
  • Welding time is reduced to a tenth
  • Reduced deformation of parts
  • Welding of parts with limited accessibility
  • Process that can be automated
  • Assembly with no filler metal