Handheld laser welding is getting faster, easier to use, and more capable. But in my view, its long-term future depends on treating it like what it is: a real welding process requiring trained and qualified people.
It is hard not to pay attention to handheld laser welding when you are trying to launch a newsletter called Manufacturing With Light.
It is one of the hottest topics in laser manufacturing, and for me it has also been one of those subjects where almost every answer leads to another question.
I should start with an important qualification: I am not a welder.
My background is in automation and laser manufacturing systems. So when I first became interested in handheld laser welding, it wasn’t because I was looking for a better way to make a fillet weld.
It was because I saw someone holding a multi-kilowatt Class 4 laser in their hand.
That got my attention.
I Started With Safety
The first questions were fairly obvious.
How do you safely use a Class 4 laser in a fabrication shop?
What happens to the reflected beam?
What kind of enclosure or Laser Controlled Area is required?
What PPE is appropriate?
Who serves as the Laser Safety Officer?
What about fumes, interlocks, access control, and people working nearby?
These concerns are well established. ANSI Z136.1 provides the basic U.S. framework for safe laser use, while ANSI Z49.1 addresses safety and health in welding and allied processes.[1][2] Current handheld-laser equipment documentation likewise treats laser safety, controlled access, PPE, and operator training as fundamental requirements. (ANSI Webstore)
The industry has also started addressing handheld laser welding specifically. A guidance document supported by the International Institute of Welding, European Federation for Welding, European Welding Association, and American Welding Society covers safety, quality, education, and qualification for handheld laser beam welding.[3] (American Welding Society)
But once I started reading about safety, another question came up.
What happens when the weld actually matters?
Safety Quickly Leads to Codes and Qualification
There is obviously a difference between welding a decorative stainless enclosure and welding a component whose integrity is governed by a code, customer specification or quality system.
Once you enter that world, a good-looking weld is not enough.
Now we are talking about welding procedures, process variables, inspection, acceptance criteria, documentation, and personnel qualification.
And this is where my view of handheld laser welding started to change.
Initially, it is easy to look at these machines as a remarkable new welding tool.
I increasingly think we need to look at handheld laser welding as a welding process.
That distinction matters.
Easy to Operate Doesn’t Mean the Process Is Simple
One of handheld laser welding’s major attractions is that people can apparently become productive with it much more quickly than with some conventional manual welding processes.
Integrated beam oscillation—or wobble—helps the operator produce a consistent weld without manually creating all of the torch motion traditionally required.
Manufacturers emphasize that advantage. IPG, for example, describes using advanced operators to develop or customize process presets that less experienced operators can then use.[4] (IPG Photonics Corporation)
That seems like a very practical production model.
But there is a danger in confusing ease of operation with process simplicity.
A particularly interesting 2026 research paper characterized seven commercially available handheld laser welding systems. The researchers found significant differences in beam waist diameter, beam quality, divergence, focal shift, power distribution, and beam-oscillation behavior.[5] (Springer)
Their conclusion is worth paying attention to:
Optimized process parameters—or even a qualified Welding Procedure Specification—cannot simply be transferred between different handheld laser systems. (Springer)
That tells me something important.
A setting of 1,500 watts does not define the welding process.
Travel speed matters.
Focus position matters.
Torch angle matters.
Beam oscillation frequency and amplitude matter.
Shielding gas matters.
Joint fit-up matters.
Wire feed matters when filler is used.
Material certainly matters.
And the condition of the optical system matters. The same research showed that contamination of a protective optical window could substantially alter the beam’s power distribution even when measured total power remained nearly unchanged.[5] (Springer)
That is starting to sound a lot less like simply pulling a trigger.
Then There Are Reflective Materials
Materials such as aluminum and copper led me down another rabbit hole.
At the approximately 1 µm wavelength commonly used by high-power fiber lasers, reflective materials can present additional process and safety challenges. Modern systems have developed approaches specifically intended to expand their usable material range, but that does not eliminate the need to understand the application.[4][5]
Again, the technology is getting better.
But the better the machines become, the more capability we put into the operator’s hands.
That makes training more important, not less.
This Is Where I Think the Future Is Heading
The most interesting thing I found while researching this article is that the welding industry is already beginning to address exactly this issue.
The international HLBW guidance has an entire section devoted to welder qualification. It recommends demonstrating manual welding skill as well as knowledge of laser radiation, laser safety, material weldability, HLBW equipment, and process parameters.[3]
It also notes that performance qualification for manual and semi-automatic laser beam welding can be performed under ASME Section IX, Table QW-358, which has included these provisions since the 2023 edition.[3][6] (Sitecore Content Hub)
AWS also already publishes C7.4/C7.4M, Process Specification and Operator Qualification for Laser Beam Welding, covering areas including process requirements, quality examination, equipment calibration, maintenance, and operator qualification.[7] (AWS Publications)
So perhaps the question isn’t whether qualification is coming.
Parts of the framework already exist.
The bigger question may be how those concepts get adapted and adopted as handheld laser welding spreads through fabrication shops.
I Don’t Think We Need to Turn Every Operator Into a Laser Engineer
There is another side to this.
If handheld laser welding requires every person using the machine to understand beam propagation, M², Rayleigh range, and optical power density, the technology is probably not going very far in the average fabrication shop.
Fortunately, I don’t think that is necessary.
I can imagine a production structure that looks something like this:
An applications specialist, welding engineer, or other qualified person develops the process and establishes the acceptable welding window.
A procedure defines the material, joint, equipment configuration, welding parameters, inspection requirements, and other essential variables.
Qualified operators are then trained and tested to perform that process consistently.
Process settings are controlled rather than casually changed.
And someone is responsible for determining when a parameter, machine, optic, material or joint change is significant enough to require evaluation or requalification.
That is not particularly revolutionary.
It is essentially what mature welding processes already do.
Qualification and Certification Aren’t Exactly the Same Thing
One terminology point is worth making.
In casual conversation, we often say a welder is certified.
Technically, welding codes and standards frequently distinguish between qualification—demonstrating the ability to make an acceptable weld under specified conditions—and certification or documentation of that qualification.
So I am not arguing that every handheld laser welder in America needs one particular national certificate.
I don’t think the current standards support that statement.
The applicable requirements will depend on the part, industry, governing code, customer, and employer.
What I am arguing is much simpler:
If handheld laser welding is going to move deeply into code-controlled, high-value and quality-critical manufacturing, documented operator competence is going to matter.
And I Think That’s Good for the Technology
None of this makes me pessimistic about handheld laser welding.
Quite the opposite.
The potential advantages are significant: high welding speeds, relatively low heat input, reduced distortion, less post-weld finishing, and the possibility of bringing productive welding capability to people much faster than some conventional processes.[3][5] (Sitecore Content Hub)
The equipment is improving rapidly.
The research base is growing.
Standards organizations are paying attention.
And manufacturers are developing more sophisticated systems and process controls.
Those are all signs of a technology maturing.
But mature manufacturing processes eventually develop rules.
They develop procedures.
They develop inspection methods.
They develop training.
And they develop ways of determining who is qualified to perform the work.
That brings me to the single opinion I wanted to express with this article:
The long-term future of handheld laser welding will not depend on proving that almost anyone can make a weld with a laser. It will depend on proving that properly trained and qualified people can make the right weld, repeatedly, safely and in accordance with an established process.
The machine may become easier.
The responsibility probably won’t.
And I think that is how handheld laser welding ultimately earns its place alongside the welding processes that came before it.
References
[1] ANSI Z136.1-2022 — American National Standard for Safe Use of Lasers. ANSI Z136.1-2022 — Safe Use of Lasers
[2] ANSI Z49.1:2021 — Safety in Welding, Cutting, and Allied Processes, American Welding Society. AWS — ANSI Z49.1:2021
[3] Hamre, D. et al., Considerations about Handheld Laser Beam Welding (HLBW), supported by IIW, EWF, EWA and AWS. This is probably the strongest single reference for the argument in this article because it specifically addresses HLBW safety, personnel qualification, and weld qualification. (Sitecore Content Hub) Read the HLBW publication from AWS
[4] IPG Photonics — LightWELD Handheld Laser Welding & Cleaning Systems. The current product information describes factory presets, customization by advanced operators, and subsequent use by novice operators. (IPG Photonics Corporation) IPG LightWELD product information
[5] Jahn, S. et al., “Laser beam characteristics of handheld laser beam welding systems,” Welding in the World, published February 10, 2026. DOI: 10.1007/s40194-026-02377-3. (Springer) Read the open-access research paper at Springer
[6] ASME BPVC Section IX — Welding, Brazing, and Fusing Qualifications, 2025 edition. The HLBW guidance specifically identifies QW-358 as a route for performance qualification of manual and semi-automatic laser beam welding. (ASME) ASME BPVC Section IX
[7] AWS C7.4/C7.4M:2017-AMD1 — Process Specification and Operator Qualification for Laser Beam Welding. (AWS Publications) AWS C7.4/C7.4M Laser Beam Welding specification