Puddle - Welding

Each puddle tells a story: here the welder paused because a gust of wind hit. Here the rod stuck for a second. Here the base metal was thinner than expected. A continuous bead hides those moments. A puddle weld preserves them. Want to learn puddle welding? Forget coupons. Get a piece of 16-gauge sheet metal. Drill a ½-inch hole in it. Weld it shut with 1/16-inch 7018 at 50 amps or .030 MIG at 16 volts.

Dip filler (or let the electrode burn) until the puddle swells slightly above the surface. For stick, this happens automatically — just hold still. puddle welding

For stick (SMAW): run 10-15% below recommended. For MIG: drop voltage until the arc is soft. For TIG: low amperage, small tungsten. Each puddle tells a story: here the welder

A continuous weld creates a long, rigid line of shrinkage stress. Multiple small puddles create many tiny stress zones that cancel each other out. For cast iron, this is critical: a single long bead can pull the part apart; puddle welding (often called “stitch welding” or “cold welding” in cast iron repair) keeps interpass temperatures below 200°F. 4. The Technique: How to Weld a Puddle (Badly, Then Well) A beginner’s puddle weld looks like a BB gun target practice. An expert’s looks like art. A continuous bead hides those moments

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. 5. The Great Debate: Art or Crutch? Among welding purists, puddle welding occupies a strange moral category.

In the polished world of modern welding — where robotic arms trace flawless laser seams and certified welders chase radiographic perfection — there exists a grimy, rain-soaked cousin. It has no ISO standard. It rarely appears in textbooks. Yet it has kept tractors running, bridges standing, and pipelines flowing for nearly a century.