Stick welding is the most forgiving arc process, but it still has plenty of ways to go wrong. The good news is that most stick welding problems trace back to three variables: amperage, arc length, and electrode condition. Get those right and you’ll solve 80% of what’s on this page.
The symptom table above gives you the quick diagnosis. Read on for the deeper context that prevents these problems from coming back.
Electrode Storage and Handling
Electrode condition causes more stick welding problems than most people suspect. The flux coating on a welding rod isn’t just packaging. It’s a carefully formulated mixture that creates shielding gas, adds deoxidizers, and controls the arc characteristics. Damaged or damp flux means a bad weld.
Low-Hydrogen Electrodes (E7018, E7016)
Low-hydrogen rods are the most moisture-sensitive. The coating is designed to produce minimal hydrogen in the weld deposit, which prevents hydrogen-induced cracking in medium and high carbon steels. But the coating absorbs atmospheric moisture readily.
Storage requirements:
- Unopened hermetically sealed cans: store at room temperature indefinitely
- After opening: transfer rods to a holding oven set to 250-300F
- Maximum exposure time at ambient conditions: 4 hours (per AWS D1.1)
- If exposed longer than 4 hours: re-bake at 700F for 1 hour (check manufacturer’s specs, some allow 500-650F)
- Rods can only be re-baked once. After that, discard them.
Practical tip for small shops: If you don’t have a rod oven, buy E7018 in small hermetically sealed packages (typically 5 or 10 lb cans). Use what you need within 4 hours and seal the remainder in an airtight container with desiccant packets. This isn’t code-compliant for structural work, but it’s workable for hobby and repair welding.
Cellulosic Electrodes (E6010, E6011)
These rods are different. The cellulosic coating actually needs some moisture to function properly. Don’t put E6010 or E6011 in a rod oven. Excessive drying damages the coating and makes them harder to run. Store them in a dry location at room temperature and they’ll be fine.
Electrode Coating Damage
Inspect rods before welding. Chipped, cracked, or flaking flux coatings create bare spots where shielding gas can’t form. The result is localized porosity and spatter at the damaged section. Snap off the damaged end and start with clean coating, or discard rods with extensive damage.
Rod Angle and Travel Technique
The angle you hold the electrode controls slag flow, penetration, and bead shape. There’s less room for error than with MIG or TIG because the electrode is also the filler, the shielding, and the flux source all in one.
Drag Angle
Stick welding uses a drag technique in nearly all positions. Tilt the electrode 5-15 degrees back from perpendicular, leaning away from the direction of travel. This is called a drag angle or backhand technique.
Why drag? The electrode melts ahead of the slag. A slight drag angle lets the molten metal flow into the joint first, with slag coating the hot weld behind it. If you push the electrode forward (like a MIG push technique), slag gets trapped under the weld.
Electrode Angles by Position
| Position | Work Angle | Travel Angle | Notes |
|---|---|---|---|
| Flat (1G/1F) | 90 degrees to surface | 5-15 degree drag | Most straightforward. Let gravity help the puddle fill the joint. |
| Horizontal fillet (2F) | 45 degrees (split the angle) | 5-15 degree drag | Aim slightly more at the bottom plate to prevent sagging. |
| Vertical up (3G/3F) | 90 degrees to surface | 5-10 degree push (upward) | Use a slight weave. Pause at the toes. Reduce amperage 10-15% from flat position. |
| Overhead (4G/4F) | 90 degrees to surface | 5-10 degree drag | Tight arc length. Reduce amperage 10-15%. Use small-diameter rods for puddle control. |
Maintaining Arc Length as the Rod Burns
This is the skill that separates experienced stick welders from beginners. The electrode gets shorter with every second of welding. You need to continuously feed the rod toward the work to maintain a consistent gap.
The feeding motion: Your hand moves in two directions simultaneously. Forward along the joint (travel) and downward toward the work (feed). The feed rate matches the burn-off rate. For a 1/8" E7018 at 120 amps, that’s roughly 3-4 inches of rod per minute.
Locking your wrist helps. Keep the angle set with your wrist and move the entire arm from the elbow or shoulder. This maintains consistent angle and arc length together.
Polarity and Its Effects
Stick welding polarity has a bigger impact on weld quality than most beginners expect. Getting it wrong is a common cause of spatter, sticking, and poor penetration.
DCEP (DC Electrode Positive / Reverse Polarity)
Current flows from the workpiece to the electrode. About two-thirds of the arc heat concentrates at the electrode. This gives deeper penetration and a more stable arc.
Used with: E6010, E6011, E7018, E8018, E9018
DCEN (DC Electrode Negative / Straight Polarity)
Current flows from the electrode to the workpiece. More heat goes into the workpiece. Burn-off rate is faster, but penetration is shallower.
Used with: Some specialty rods and hardfacing electrodes. Not common for structural work.
AC
Alternating current reverses polarity 120 times per second (at 60 Hz). It eliminates arc blow, which makes AC the go-to fix when DC produces magnetic deflection problems.
Used with: E6013, E7014, E7018AC. Note that standard E7018 runs poorly on AC. If you need low-hydrogen performance on AC, buy rods specifically rated for AC operation (E7018AC or E7018-1).
Troubleshooting Arc Blow
Arc blow is one of the more frustrating stick welding problems because the fix isn’t always obvious. The arc deflects to one side, forward, or backward, and it resists all attempts to aim it at the joint.
What causes it: DC current flowing through the workpiece creates a magnetic field. Near the edges of the plate, near tack welds, or near changes in cross-section, the magnetic field concentrates unevenly. The arc follows the magnetic path of least resistance instead of pointing straight at the work.
Step-by-step arc blow troubleshooting:
- Move the work clamp to the far end of the joint (away from where you’re starting). This changes the current path and shifts the magnetic field.
- Weld toward the work clamp rather than away from it. The arc tends to blow toward the clamp connection, so aim that force in a useful direction.
- Switch to AC if the electrode allows it. AC cancels out sustained magnetic deflection.
- Add runoff tabs on the ends of the plate. This gives the magnetic field room to dissipate beyond the end of the joint.
- Demagnetize the workpiece by wrapping it with several turns of welding lead and pulsing DC current through the coil. This is a last resort for severely magnetized material.
If you’re welding on a magnetized shaft or pipe (common on equipment that’s been near electric motors), arc blow can be severe enough to make DC welding impossible. AC or demagnetization are your only real options.
When to Suspect Equipment Problems
Stick welders are mechanically simple. There’s a transformer (or inverter), an output circuit, and a work clamp. Not much to go wrong compared to a MIG welder’s wire feed system. But problems do occur.
Amperage output not matching the dial: Older transformer machines develop loose connections at the tap selector. Inverter machines can have failing output transistors. If your 120-amp setting feels like 80 amps (rod sticking, weak arc), measure the actual output with a clamp ammeter on the electrode lead.
Intermittent arc drops: Loose connections in the electrode holder, at the work clamp, or inside the machine cause momentary open circuits. The arc goes out, you re-strike, and it drops again. Inspect every connection from the machine output terminals to the electrode jaw and work clamp jaws.
Duty cycle overheating: Small stick welders (120V, 90-140A class) overheat fast at their maximum rated amperage. The machine shuts down on thermal overload. This isn’t a malfunction. It’s the duty cycle limit. At 140 amps with a 20% duty cycle, you get 2 minutes of welding per 10-minute period. Drop the amperage and the duty cycle improves. For production work, you need a machine rated for higher duty cycles.