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Overhead stick welding is one of the least forgiving welding positions. Molten metal wants to fall, slag can break loose without warning, and a small mistake in arc length can produce a shower of sparks or a weak, irregular bead. It is still a useful skill for field repairs, structural work, and jobs where a stick welder is more practical than a MIG or TIG machine.

The key is to make the weld puddle small, keep the arc tight, and use the lowest practical amperage. Overhead welding should only be attempted on clean, sound metal with proper fall protection and welding PPE.

Prepare the Joint and Work Area

Fit-up matters more overhead than it does in many flat-position welds. A wide gap forces you to carry more molten metal, which increases dripping and burn-through. For a typical mild-steel butt joint, aim for a root gap of about 1/16 inch, adjusting for the material thickness and joint design. Bevel plate edges when the joint requires full penetration, and leave a small land so the root does not wash through.

Remove paint, rust, mill scale, oil, and moisture at least 1 inch from each side of the joint. Contamination causes porosity and unstable arc behavior. Tack the work securely, then inspect the tacks for cracks before starting the weld.

Clear the area below you. Do not weld over flammable materials, vehicles, people, gas cylinders, or equipment that can be damaged by falling slag. Use welding screens where others are nearby, and make sure your cables are routed so they cannot catch your feet.

Choose the Right Stick Electrode

For ordinary mild steel, a 6010 or 6011 electrode is useful for a penetrating root pass, while a 7018 produces a smoother, stronger-looking fill or cap. A 6011 is often the practical choice on rusty repair steel because it runs on AC or DC and tolerates more surface contamination than 6010. Neither electrode makes dirty metal acceptable, however.

Electrode diameter has a direct effect on control. A 3/32-inch rod is a good starting point for many overhead jobs. A 1/8-inch rod carries more metal and is faster, but it also creates a larger, harder-to-control puddle. On thin material, use a 3/32-inch or smaller electrode to reduce burn-through.

If you use low-hydrogen 7018, keep the rods dry according to the manufacturer’s instructions. Damp 7018 can contribute to porosity and hydrogen cracking, particularly in thick or restrained joints. A sealed package is adequate for occasional home work, but opened electrodes should not be left exposed in a damp shop. Compare 7018 welding electrodes with the rod type your welder supports before buying.

Set Amperage and Polarity

Use the electrode package as your starting point, then adjust for position. For a 3/32-inch rod, a useful initial range is roughly 70 to 95 amps, depending on the electrode and joint. For a 1/8-inch rod, begin around 90 to 120 amps. Overhead work commonly needs less amperage than flat work, often by 5 to 15 amps.

Too much amperage makes the puddle fluid and encourages dripping, undercut, and excessive penetration. Too little amperage causes sticking, poor fusion, and a tall, rope-like bead. If the arc sounds erratic and the rod repeatedly freezes to the work, increase amperage slightly or shorten the arc.

Check the polarity recommended for the electrode. Many 6010 rods run on DC electrode positive, while some 6011 rods are suited to AC or DC. A machine with adjustable hot start and arc force can make overhead starts easier, but a basic stick welder is perfectly adequate when the settings and technique are right.

Run the Overhead Bead

Position yourself to the side of the joint rather than directly underneath it. Keep both hands stable: one hand controls the electrode holder, while the other can support the cable or brace against a safe surface. Wear a properly fitted auto-darkening welding helmet with a grind mode and a clear lens suitable for your work.

Strike the arc with a short scratching motion, then immediately establish a short arc length—approximately equal to the electrode’s bare metal diameter or slightly shorter. A long arc increases spatter and lets the puddle sag. Hold the rod close to 90 degrees to the joint, with a small travel angle of about 5 to 15 degrees.

Use a narrow stringer bead instead of a wide weave. Travel steadily enough to keep the puddle behind the arc, but not so fast that the sides fail to fuse. For a 3/32-inch electrode, a travel speed around 3 to 6 inches per minute is a reasonable starting estimate; the correct speed depends on amperage, joint thickness, and rod type.

Watch the puddle, not just the arc. It should remain small and controlled, with the slag trailing behind it. If metal begins to fall, stop, let the area cool briefly, and reduce amperage or speed up. Do not try to catch a large dripping puddle by making a wide weave.

Clean Between Passes

Let each pass cool enough to control the next one, then remove all slag with a chipping hammer and wire brush. Trapped slag between passes is a common cause of inclusions and lack of fusion. A small grinder is useful for correcting a high spot, but avoid grinding away the joint edges or reducing the required weld size.

For a multi-pass weld, stagger the starts and stops rather than stacking every termination in one location. Fill craters before breaking the arc, or use a short back-step at the end of the pass. Inspect for undercut along both toes, visible cracks, pinholes, and areas where the bead sits on top without blending into the base metal.

Protect Yourself From Falling Slag

Overhead work demands more than a helmet and gloves. Wear a flame-resistant welding jacket or leather sleeves, high-top leather boots with trouser legs over the boot openings, and gauntlet gloves. Avoid synthetic clothing; hot slag can melt it into the skin. A leather welding jacket is inexpensive protection compared with a burn injury.

Use safety glasses under the welding hood, especially while chipping slag. Add hearing protection when grinding, and provide ventilation or suitable respiratory protection when coatings, galvanized steel, stainless steel, or unknown metals are involved. Stop immediately if you cannot see the puddle, maintain a stable stance, or keep slag away from your clothing and surroundings.