Puddle Welding |work| -

If you have a ½-inch hole in 1/8-inch steel, a continuous bead would fall through. But by building overlapping puddles from the edges inward — like a spider weaving a web — you can “cap” the hole. The first puddles freeze to the edge; subsequent puddles freeze to those puddles. After 20 or 30 deposits, the hole is solid.

One pipeline welder in North Dakota told me: “I can weld a puddle in a 30 mph wind with 7018 that’s been sitting in a wet truck bed. Try that with your perfect stringer bead.” puddle welding

Place the next puddle so that it covers 30-50% of the previous one. For a hole, start at the edge and spiral inward. If you have a ½-inch hole in 1/8-inch

Why does puddle welding work when a continuous bead fails? After 20 or 30 deposits, the hole is solid

moving before the puddle freezes. That creates a “wagon track” — a groove full of slag and porosity. Wait until the red glow fades to black.

Puddle welding, also known as plug welding, was a process that involved creating a series of small welds, or "puddles," to join two metal plates together. The technique required a deep understanding of heat control, as the goal was to create a strong bond without melting through the metal. Jack had watched countless videos and tutorials, but he knew that practice was the only way to truly master the craft.

It is the most forgiving technique for contaminated metal. It requires zero joint fit-up. It can be done in any position (overhead puddle welding is an acquired skill). And it has saved thousands of dollars in parts that were “unweldable” by textbook methods.