In custom sheet metal fabrication, precision welding plays a critical role in achieving strong, distortion-free joints. At Mettler Design, we understand that not all welding processes deliver the same quality — especially when working with light-gauge sheet metal. That’s why we’ve chosen to utilize Cold Metal Transfer (CMT) welding over traditional methods like MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas) welding.

By integrating CMT welding into our fabrication processes, we ensure that every component — from custom enclosures to intricate assemblies — meets the highest standards of durability, accuracy, and visual appeal.

Issues with Conventional MIG and TIG Welding

Traditional MIG and TIG welding techniques generate significant heat. This excessive heat often leads to problems such as:

• Metal distortion and warping
• Spatter formation on the surface
• Burn-through on thin metals
• Meltback in stainless steel and aluminum

These challenges can compromise both the structural integrity and aesthetics of the finished part. In contrast, CMT welding drastically minimizes these issues by reducing the heat input during the welding process.

How Does Cold Metal Transfer (CMT) Welding Work?

The CMT process uses a precisely controlled pulsed arc that alternates between high and low current phases. During the high current phase, a small droplet of molten filler material is transferred to the workpiece. Immediately after, the wire retracts and cools, reducing overall heat input.

This pulsing mechanism ensures:

• Minimal spatter production
• Exceptionally stable arc control
• Superior weld quality on light-gauge metals

The automatic arc regulation adapts to the welding speed and surface condition, resulting in a consistent, high-quality weld every time.

Why Mettler Design Prefers CMT Welding

At Mettler Design, our commitment to precision engineering drives us to adopt advanced technologies like CMT welding. The benefits are clear:

• Reduced heat distortion for cleaner results
• Enhanced strength without compromising form
• Improved surface finish and minimal post-processing
• Reliable performance across stainless steel, aluminum, and other alloys

By leveraging Cold Metal Transfer welding, we transform complex design challenges into seamless, production-ready components — faster, cleaner, and more efficiently.

Partner with Mettler Design for Custom Welding Solutions

Whether you’re designing custom enclosures or precision sheet metal parts, Mettler Design integrates CMT welding into your project to deliver unmatched quality. Our team ensures your product not only meets functional requirements but also stands out in performance and appearance.

Got a design in mind?
Let’s bring it to life with precision. Contact Mettler Design today to discuss your custom fabrication project.