On This Page On This Page Why manufacturers are considering laser welding Finding ways to improve productivity and reduce costs are important factors in any welding application. Companies often look at technology advancements to achieve these goals, but many operations might not consider laser welding, which is frequently perceived as too expensive or complicated. Today, that perception is changing. Advancements in laser welding technology, including operator-friendly solutions like the Miller® OptX™ handheld laser , have made it more accessible and affordable than ever. In many applications, especially in sheet metal, laser welding can deliver significant productivity gains and a fast return on investment. So, is laser welding right for your sheet metal operation? Start by understanding its key factors and benefits. Benefits of laser welding systems Laser welding, including solutions like the OptX handheld laser welder in 1kW and 2kW models, offers measurable advantages over traditional processes like TIG, MIG and resistance spot welding: Faster travel speed 3–5x faster than MIG welding (in some applications) Low heat input High precision and consistency Minimal setup downtime Pre-engineered systems allow for quick installation For operations focused on sheet metal or automated production, these benefits can translate directly to improved throughput and reduced labor costs. Advancements in laser welding The use of laser welding continues to grow in automated welding applications due to advancements in technology and increased affordability. Older vs. modern systems Laser welding uses a laser to join pieces of metal. Traditionally, high-powered lasers used carbon dioxide as the medium and had a wavelength of about 10 microns. A laser of this wavelength cannot be transmitted through a fiber optic cable, making it difficult to automate a laser welding process. Technology advancements have moved the industry forward in this regard. The evolution of 1-micron wavelength lasers means that the laser can be transmitted through fiber optic cable, making it more easily automated for welding. Lower costs through diode efficiency In addition, 1-micron wavelength lasers are typically powered by diodes. As diode technology has improved: Fewer diodes are needed to generate power Overall system costs have decreased Cost per watt continues to drop These advancements make laser welding more accessible for a wider range of operations. Why laser welding works well for sheet metal Parts that operations traditionally TIG weld and that require a high-quality appearance are good candidates for conversion to a laser welding process. These factors make laser welding especially well-suited for sheet metal applications. Sheet metal is typically very thin and requires a low heat input in welding. It’s also often used in applications that require high aesthetic quality or cosmetic results, such as: Appliances Signs Produce a low-profile weld bead Reduce or eliminate grinding and cleanup For example, in electrical box manufacturing, MIG welding often requires post-weld grinding at outside corners. Switching to laser welding can remove this step entirely, saving time and labor costs. Understanding laser welding modes: Conduction vs. keyhole mode Laser welding operates in two primary modes: conduction and keyhole, depending on energy density. Conduction mode (low energy density) Larger spot size, lower power Heat transfers through the material via conduction Produces a smooth, controlled weld puddle Smaller spot size, higher power concentration Creates deep penetration welds Replacing resistance spot welding Operations can use the same laser welding system for both conduction mode and keyhole mode. By increasing the power or reducing the laser spot size, this changes the mode from conduction to keyhole. Benefits of pre-engineered laser systems Fast and simple integration Can often be installed and operational the same day Comparable to integrating other robotic welding cells Built-in safety features Greater flexibility in shop floor placement Test before you invest Is laser welding right for your operation? Laser welding is no longer a niche or overly complex solution — it’s a practical option for many modern fabrication environments. It’s particularly well-suited for sheet metal welding, automated production lines or applications requiring precision and aesthetics. For operations now using MIG, TIG or resistance spot welding, a switch to laser welding can significantly improve productivity — saving time and money while still producing high-quality welds. Explore More Industrial Welding Resources