What Does SMAW Mean? Shielded Metal Arc Welding (Stick Welding), Fully Explained
SMAW means shielded metal arc welding, aka stick welding. Learn how it works, electrodes, technique, safety, uses, and…
READ ARTICLE →A first-year trade student once burned through three rods and a $60 consumable holder before an instructor quietly turned his amps down by 15 and said, ‘Now drag, don’t push.’ The bead instantly went from a lumpy caterpillar to a clean, frozen ripple pattern. Stick welding rewards feel and fundamentals far more than gear — and this guide is the lesson that student wishes he’d had on day one.
An instructor once cut 15 amps off a first-year student’s settings, told him to stop pushing and start dragging, and watched a lumpy, gouged bead turn into a clean, frozen ripple pattern in a single pass. Nothing about the machine changed except a dial. That is the whole argument for technique in one moment: the welder, not the welder’s wallet, decides the outcome.
If you searched for stick welding techniques, you are probably not looking for marketing copy about inverters and synergic waveforms. You want something you can act on tonight: what amperage to dial for a given rod, how long to hold the arc, which way to angle the electrode, and why your bead keeps sagging out of position. That practical, do-it-today intent is exactly what this guide is built around.
Shielded Metal Arc Welding, or SMAW, is defined by the American Welding Society as an arc welding process that produces coalescence by heating with an arc between a covered metal electrode and the work. Strip the jargon and it says something remarkable: a stick electrode is simultaneously the heat source, the filler metal, and the shielding system. The flux coating burns into gas and slag, the core wire becomes the bead, and the arc does the melting — all in one consumable that fits in your shirt pocket.
That built-in self-sufficiency is why stick remains the most common entry-level process taught in vocational programs. It forces learners to confront the fundamental variables openly — amperage, arc length, angle, travel speed and rod manipulation — instead of hiding them behind a wire feed trigger and a gas bottle. Learn to read a puddle with a 6010 and you can read a puddle on almost any process later.
Quick Note: Technique transfers. Welders who move from stick to MIG setup or TIG usually adapt faster than the reverse, because they already understand heat balance and puddle control without a computer helping them.
Modern machines are quieter, lighter, and more efficient, but process dominance is decided by conditions, not comfort. Stick thrives wherever the work is heavy, dirty, remote, or exposed:
The economics are just as blunt. A functional stick rig often costs a fraction of a MIG setup because it needs no shielding gas cylinder, liner, or feed rollers — fewer parts to buy, fail, and haul. For a beginner or a one-person shop, that difference is the gap between welding this month and welding next year.
Good gear buys consistency, but it cannot buy feel. Voltage drop across long or poor cables, worn cable connectors, and a weak ground clamp will all sabotage a skilled hand — yet a skilled hand on a cheap buzz box will still out-produce a novice on a $4,000 machine. That is why instructors sequence technique first and purchases second, and why our roadmap below puts fundamentals ahead of buying advice.
One caution before you strike an arc: exposure control and protective equipment are not optional footnotes. Federal rules on ventilation and respiratory protection live in 29 CFR 1926.353, with additional OSHA PPE guidance and NIOSH welding health research behind it. We cover the practical side in our welding PPE guide. Read it before your first practice session, not after your first burn.
With that groundwork set, let’s open the hood and look at what is really happening inside the arc.
Before you touch a rod to plate, it helps to know what is actually happening in that tiny gap. Stick welding looks like sparks and smoke from the outside, but under the hood it is a controlled chemical reaction happening about ten times a second. Once you understand the physics, dialing in settings stops being guesswork and starts being a decision you can defend.
Strike an arc and you create a column of ionized gas, or plasma, that carries current from the electrode tip to the workpiece. That column is hot enough to melt steel almost instantly. The end of the core wire melts off in droplets and transfers into the joint, which is why the stick electrode acts as both heat source and filler metal in a single consumable package.
The clever part is the coating. As the arc burns it, the flux coating decomposes chemically, producing three things at once:
Strip that coating off and the molten metal oxidizes almost instantly, leaving a porous, brittle, grey mess. This is also why stick survives wind and dirty plate better than gas-shielded processes: the shielding is generated at the arc itself, so there is no external gas stream to blow away. If you have ever wondered how the process compares with wire-fed alternatives, our guide to flux core wire welding tips shows the same principle from the other side of the fence.
Polarity decides where most of the heat goes, and it is the single most under-used setting on a beginner’s machine.
| Setting | Heat concentrated at | Typical use |
|---|---|---|
| DCEP (reverse polarity) | Electrode | Deep penetration; standard for E7018 and E6010 low-hydrogen and fast-freeze rods |
| DCEN (straight polarity) | Workpiece | Softer, faster-melting arc; some deposition rods, cast iron and thin work |
| AC | Alternates both ways | Rods designed for AC such as E6011; older machines; fighting arc blow |
DCEP is the default answer for most structural electrodes, and AC is common on older transformer machines and on rods engineered for it, notably E6011. Arc blow, that annoying sideways shove on DC runs near the end of a joint or around magnetic steel, is the classic reason welders flip to AC. The full digit-by-digit decoding lives in our guide to electrodes in welding, and the manufacturer’s data sheet always overrides any general rule.
Quick Note: Open-circuit voltage (OCV) is the voltage sitting at the terminals before you strike the arc. A higher OCV makes starts easier and restarts on a cold, half-finished crater less frustrating, which matters far more with cellulose-blended rods than with low-hydrogen ones.
The most reliable field shortcut is simple: use roughly one amp per 0.001 inch of electrode diameter. A 1/8-inch rod (0.125 in) therefore lands in the 90–130 amp window, with the low end used overhead or on thin plate and the high end used flat on heavy material. Concretely, a 3/32 E7018 amperage setting sits much lower than a 5/32 E7018 amperage setting on the same plate, and swapping rods without revisiting the dial is a classic cause of burnt-through edges.
Amperage drives heat input, but travel speed finishes the equation: heat input scales with amps multiplied by volts, divided by travel speed. Codes such as AWS D1.1 cap heat input for metallurgical reasons, which is one reason stringer beads are preferred over wide weaves on critical work. Cranking amps to compensate for a dragging arc also risks burn-through on sheet; our stick welding thin metal guide covers that trap in detail.
Two setup details masquerade as technique problems more often than anything else. Long or undersized welding cables create voltage drop, so the machine displays a healthy setting while the arc itself runs starved and erratic. Keep runs short, terminals clean and connectors tight, as explained in welding cable connectors explained. And remember that duty cycle is always rated at a specific output on a defined cycle, per equipment standards such as IEC 60974-1: a machine pushed past its rating thermally drops output mid-bead, and that stutter looks exactly like a bad hand.
Short Note: If a bead suddenly goes erratic, check your connections and let the machine cool before blaming your arc length. Technical specifications for electrodes themselves are published by the American Welding Society, so the AWS publications library is where the authoritative A5-series documents live.
Before you strike a single arc, the most important technique you’ll ever learn has nothing to do with rod angle or travel speed. It’s the discipline of protecting yourself. Stick welding throws more hazards at you than almost any other process: ultraviolet and infrared radiation, molten spatter, hot slag, toxic fumes, and live electrical leads. Every experienced welder has a story about a burn or a scare that shaped how they work forever. Let’s make sure yours is a story you tell from the sideline, not the emergency room.
Personal protective equipment is your last line of defense, and with stick welding it needs to be serious gear, not dollar-store compromises. At minimum you need:
For a deeper dive into gloves, leathers, and lens shade selection, our complete guide to welding PPE and protective gear walks through every piece gear-by-gear.
The flux coating that makes stick welding so versatile also means you’re breathing something more complex than with wire processes. As the arc breaks down the coating, the resulting fume can contain manganese, hexavalent chromium (especially when welding stainless or coated steels), zinc oxide (from galvanized steel — the culprit behind classic “metal fume fever”), and a soup of other metallic oxides. NIOSH has studied welding fume exposure for decades and consistently recommends engineering controls and respiratory protection where exposure limits are approached.
The rules are concrete. OSHA construction standard 1926.353 requires that welding, cutting, and brazing operations producing fumes and dusts be provided with ventilation — and respiratory protection where necessary — to keep exposures below established limits. General industry falls under similar obligations under OSHA’s broader welding, cutting, and brazing guidance.
Quick Note: Natural drafts are not ventilation. Welding near an open shop door often pushes fume straight into your breathing zone. Use mechanical extraction — a fume extractor arm or at minimum forced air movement that carries fume away from your face, never across it.
Practical habits matter as much as equipment: never weld on galvanized, cadmium-plated, or lead-painted metal without proper controls, keep your head out of the plume rather than leaning over the puddle, and wear fit-tested respiratory protection when working in confined spaces. If you’re welding overhead or in booths with poor airflow, exposure climbs fast.
Welding is classified as hot work for a reason — NFPA data and decades of fire investigation consistently show hot work among the leading causes of industrial fires. The routine is simple and absolute:
Stick welding runs enough open-circuit voltage to hurt you, and in damp conditions, on metal platforms, or when sweating heavily, it can kill you. Stand on dry insulating matting, keep your gloves dry, inspect lead insulation, and never weld in rain or puddles without proper precautions. This hazard doesn’t disappear when you switch processes — as our MIG welding safety guide explains, the same electrical discipline applies across the shop.
And one stick-specific trap that shocks beginners daily: when the electrode sticks to cold work, never pull. Pulling locks your muscle into the rod and yanks the stinger toward you. Twist the electrode sideways to break it free — and switch the machine off before adjusting your holder or leads.
Short Note: Cheap, ill-fitting gear causes as many accidents as no gear. A helmet that slips, gloves that gap at the wrist, or trousers that ride up will expose you at the worst possible moment. Fit matters.
Treat this checklist as a habit, not a checklist. The welders who last thirty years in this trade are the ones who never once decided safety was optional today.
When you pick up a stick electrode, the number printed on it tells you far more than its size. For those practicing stick welding techniques, knowing how to read that code can be the difference between a clean bead and a failed joint. The right rod will set your amperage, position range, penetration and puddle behavior before you strike an arc.
The AWS electrode classification system packs most of what you need into a short string. Take E7018 as an example:
| Symbol | What It Tells You |
|---|---|
| E | It’s a “stick” electrode, used for shielded metal arc welding. |
| 70 | Minimum tensile strength of 70,000 psi in the deposited weld metal. |
| 1 | Welding position: 1 = all positions, 2 = flat and horizontal only. |
| 8 | Coating type and usable current: 8 = low-hydrogen iron-powder coating, usable on DCEP (and some on AC). |
Using that logic, E6018 carries 60,000 psi and a low-hydrogen coating in all positions. E6010 carries 60,000 psi, all positions, but uses a cellulosic coating designed for DCEP only. For a deeper breakdown of flux chemistry and polarity, check out our guide on what electrodes are in welding.
While there are dozens of rods on the market, these five cover the vast majority of jobs. Here’s a quick side-by-side:
| Rod | Penetration | Puddle Type | Positions | Where It Shines |
|---|---|---|---|---|
| E6010 | Deep, cutting | Fast-freeze | All | Root passes, pipeline, dirty or rusty plate, vertical-up |
| E6011 | Deep, AC-capable | Fast-freeze | All | Same as 6010, but ideal for AC machines and farm repairs |
| E6013 | Shallow to moderate | Fast-fill | All | Thin sheet, practice beads, and cosmetic passes on clean steel |
| E7018 | Moderate | Fluid-freeze | All | Structural work, high-toughness joints and production fillets |
| E7024 | Moderate | Fast-fill (iron powder) | Flat/horizontal only | High-deposition fill and cap passes on plate |
For most jobs, how the puddle acts matters more than the tensile number. E6010 and E6011 are fast-freeze rods: their cellulosic coating drives deep penetration and solidifies the pool almost instantly. That’s perfect for open root work, especially on pipe, where a fluid puddle would sag. E7018 is fluid-freeze, staying wet long enough to tie in cleanly before solidifying into a tough, low-hydrogen deposit. With its iron-powder coating, E7024 packs in filler volume, but its fluidity limits it to flat and horizontal runs.
These behaviors line up with real procedures. Pipeline root passes often call for E6010, while structural steel fabricators rely heavily on E7018 to meet the demands of AWS D1.1. For those dialing in specific sizes, our 3/32 E7018 amperage guide and 5/32 E7018 settings guide take the guesswork out of it. You can also see how rod choice fits into full jobs in our pipe welding procedures guide.
Quick Note: Low-hydrogen rods like E7018 absorb moisture from the air. Excess hydrogen can lead to porosity and cracking, so they must be stored and re-dried in a rod oven per the manufacturer’s spec. This isn’t optional for code work, it’s a requirement.
No rod can make up for poor prep. Always remove coatings to bright metal where possible, and as OSHA notes, take proper precautions against fumes when burning coatings. Get those basics right, and the right rod will do the rest.
Watch ten beginners run a practice bead and you’ll see the same five things going wrong, usually all at once. Arc length wanders, the rod angle drifts, travel speed jumps, the machine is set by guesswork, and there’s no deliberate manipulation at all. Every instructor drills the same fix, because these five variables are the entire foundation of SMAW. Master them and ugly beads turn into consistent ones no matter which rod you load.
The standard guidance is simple: keep the arc length roughly equal to the diameter of the electrode’s core wire. A 1/8 in rod runs about a 1/8 in arc; a 3/32 rod runs tighter than that. Push it longer and two things happen. The shielding gas cloud from the flux can’t cover the puddle, and the arc voltage climbs, scattering heat instead of focusing it.
The visible results are unmistakable: heavy spatter, a fuzzy noisy arc, porous metal under the slag, and poor penetration at the edges. A long arc is the single most common cause of porosity in stick welding. If your beads look frothy and your plate is peppered with dots, shorten the arc before you touch anything else.
Two angles, two jobs. The work angle is where the rod points relative to the joint faces, usually 45° into a fillet. The travel angle is how far it leans away from the direction of travel.
For most fillet and butt welds, a drag (backhand) technique of roughly 5–15 degrees from perpendicular is the norm. Push the rod forward instead and the arc blows into cold metal, leaving shallow penetration and a fluffy bead. The exception matters: E7018 often runs a slight push or near-perpendicular angle, because its soft, quiet arc already penetrates well and dragging it can trap slag. Bigger rods behave the same way, which is why 5/32 E7018 settings and technique call for a flatter, more controlled hand than a 3/32 root pass.
Your bead is a speedometer. Aim for a finished width about 2.5 to 3 times the electrode diameter, with each ripple overlapping the previous one by roughly half the bead width.
Correlate speed with heat. Too fast travel on thin plate produces lack of fusion; too slow invites blow-through. When a bead runs wide and lumpy, chances are your amps are high or your hand is dragging.
Amperage isn’t a preference, it’s a calculation from electrode diameter, material thickness, position, and polarity. Run cold and you get a stubborn arc that sticks, poor fusion, and a tall ropy bead. Run hot and you get undercut at the toes, excessive penetration, spatter, and burned flux. Positional work always drops the setting a little, and overhead drops it the most. If you want a working baseline for structural low-hydrogen rods, the AWS electrode classification number and rod-specific amperage charts give you a defensible starting point rather than a random dial position.
Quick Note: Watch the leading edge of the puddle, not the arc. The light will fool you, but the puddle’s edge tells you exactly what the metal is actually doing — whether it’s wetting into the joint, standing proud, or outrunning you.
Manipulation is only useful once the first four are stable. Small, deliberate side-to-side or crescent motions keep heat even; wide weaving dumps heat into one spot and can cause undercut along the toes. Keep stickout short and consistent, roughly one electrode diameter, since a long stickout wastes current and weakens your shielding. As you burn the rod down, your body position has to travel with it, so plan your arm and wrist movement before you strike the arc — steady stick welding comes from braced, repeatable movement, not a free-floating hand. These same habits carry directly into positional and pipe work, where there is no margin for a drifting arc.
Every welding instructor starts students on the same exercise: a dead-straight stringer bead on flat plate, dragged with no side-to-side motion at all. That straight pull teaches the two things that make or break every weld that follows — steady arc length and consistent travel speed. The next question comes quickly: what do you do when the joint is wider than a single bead? That is where rod manipulation and weave patterns enter, and where self-taught welders pick up habits codes later reject.
A stringer bead is exactly what it sounds like — a straight pass with no weaving, just a steady drag. In structural welding, stringers are not merely the beginner option; they are often required. Weaving holds heat in the plate longer, widening the heat-affected zone and leaving a wavy surface, so welding procedure specifications (WPS) written to AWS D1.1 rules frequently limit weaving on root and fill passes in favor of multiple stringers. Stringers also cut the risk of trapping slag in weave valleys, a common reason a weld fails inspection.
Quick Note: Before you weave on any structural job, check the WPS. If it does not call for a weave, run stringers and overlap each pass by roughly half the bead width. Overriding a written procedure, even with good results, technically invalidates the qualification.
When a single bead will not cover the joint, four manipulations cover almost every situation:
Whichever pattern you choose, the same rule applies: the puddle should stay the same width from start to finish. If it grows wider as you go, you are moving too slow or your current is too high. If it narrows, you are speeding up or drifting to a long arc.
There is a practical ceiling on any weave. Most fabricators cap the width at roughly 2.5 to 3 electrode diameters. Beyond that, the flux coating’s shielding envelope can no longer blanket the full molten pool, and atmospheric contamination shows up as porosity near the center of the bead. On a 1/8-inch rod, that means a weave should not exceed about a quarter inch before you switch to multiple stringers. When you overlap a weave with a second pass, chip and wire-brush the slag completely first — slag inclusion is one of the most frequently rejected discontinuities in inspection, and it almost always traces back to a skipped cleaning step.
Gravity is why vertical positions feel hard, and travel direction changes everything. Vertical-up (6 o’clock to 12) gives deeper penetration and a stronger root, which is why it is the preferred progression for root passes on heavy plate and structural groove welds. Vertical-down is faster and cools the puddle quickly, making it the go-to on thin pipe and sheet where burn-through is the real enemy. If you are working on thin material, our guide to stick welding thin metal breaks down the amp reductions and short-arc technique vertical-down demands. Pipe welders will also find the pass sequencing laid out in our pipe welding procedures guide.
The fastest way to build manipulation control is embarrassingly low-tech. Snap chalk lines across a piece of scrap plate to make a grid of one-inch squares. Run a stringer bead inside each row, keeping both edges parallel to the chalk lines the whole length. Then flip the plate and repeat with a weave, holding each one the same width from start to finish. Mark every spot where the bead wandered and note the cause: eyes on the arc instead of the puddle, a rotating wrist, or a drifting rod angle. Twenty minutes a session, two or three times a week, and within a month most bead defects simply stop appearing. Soon the weave becomes something you reach for because the joint calls for it, not because the bead got away from you.
Ask ten beginner welders what part of the job they dread most, and “overhead” wins in a landslide. It makes sense: everything you’ve learned about puddle control suddenly has to work while molten steel hangs above your head and gravity does its best to drop it in your collar. But here’s the good news — positions aren’t random labels invented to torture students. They’re a simple coding system, and once you understand what each number and letter means, you can predict exactly how the puddle will behave and what to change before you ever strike an arc.
The AWS position system is easier than it looks. A number tells you the position of the joint, and a letter tells you the type of joint:
So 1F is a flat fillet weld, 2G is a horizontal groove weld, and a 3G plate test is a vertical groove weld on plate — one of the two most common structural qualification tests in the industry. Pipe positions use a different numbering system (1G through 6G), which we break down separately in Pipe Welding Procedures: The Complete Guide to WPS, Positions, Passes & Inspection.
In the flat position, life is good. The puddle sits in the joint and stays put, which is why flat-position welding is often where beginners start and why high-deposition rods like the E7024 work so well here. Move to horizontal, and now the molten metal wants to sag off the top edge of the joint — the classic cause of overlap and an uneven fillet profile. Vertical-up welding fights sagging by letting the solidified puddle shelf support the molten metal above it, but it demands slow, patient travel and tight control. Vertical-down is faster and common on thin material, but it sacrifices penetration.
Overhead is the extreme case. The puddle wants to drip, so your technique adjusts in three ways: shorter arc, faster travel, and smaller electrodes. A long arc overhead pumps extra heat into the puddle and makes it fluid enough to sag or drip. Dropping one electrode size when you go out of position is standard shop practice — instead of a 1/8-inch rod, run 3/32-inch for vertical and overhead work, as covered in our 3/32 E7018 amperage guide. Fast-freeze rods in the 6010/6011/6013 family are popular overhead because the puddle solidifies before gravity can drag it out of shape.
Quick Note: Gravity is the overhead welder’s main opponent. A fast-freeze rod, a short arc, and confident travel speed beat caution every time — hesitating lets the puddle build up heat and sag. For a full walkthrough of amperage, rod choice, and body position, see Overhead Stick Welding: The Complete Guide to 4F & 4G Technique, Amperage, and Rod Selection.
Not every rod runs happily in every position. AWS electrode classifications encode this: the last digit tells you the allowable positions. Here’s a quick reference:
| Electrode | Positions | Best Use by Position |
|---|---|---|
| E6010 | All | Root passes, vertical-down, dirty/rusty metal |
| E6011 | All | AC repair work, out-of-position on dirty plate |
| E6013 | All | Beginner flat and horizontal, thin material |
| E7018 | All | Vertical-up structural welds, low-hydrogen passes |
| E7024 | Flat & horizontal only | High-speed flat fillets and horizontal groove caps |
That “all positions” rating on a 7018 is why it dominates structural work — you can root, fill, and cap a vertical-up groove weld with the same low-hydrogen rod and keep toughness consistent. Full decoding of these numbers lives in What Are Electrodes in Welding?, and current settings for the common sizes are covered in 5/32 E7018 Amperage: Settings, Polarity & Technique.
Here’s where positions stop being theory and start being your paycheck. Welder qualification tests are performed in the positions you’ll actually weld on the job. Under AWS D1.1, the Structural Welding Code — Steel, a welder who passes a 3G groove test and a 4G groove test on plate is qualified for a broad range of groove welds in all positions. Those two plate tests are among the most widely used qualification routes in structural steel precisely because, combined, they cover everything from flat to overhead. Pass only a 1F flat fillet test, and your qualification stays limited to flat fillets. Contractors check your test coupons against the work they’re bidding, so a welder who can only run flat beads gets sent to the shop floor, not the field.
This is also why position skill translates into money. Field work — structural erection, pipeline tie-ins, shipyard repair, maintenance in operating plants — is almost never conveniently flat. If you can run a sound 3G vertical-up root and a clean 4G overhead cap, you’re the welder the crew calls. And if you’re chasing pipe work specifically, note that pipe qualification adds positions 5G (fixed horizontal pipe) and 6G (45-degree fixed pipe), which are considered the toughest tests in the trade. The American Welding Society publishes the full framework for these qualifications if you want the code-level detail.
Note: Working out of position also means working in awkward places — elevated, crouched, or overhead under existing steel. Before you weld anywhere unusual, walk the area for fire hazards, ventilation, and access. OSHA’s construction welding standards (29 CFR 1926.353) require ventilation and fume control precisely because out-of-position welders end up in the worst breathing zones on the site.
For the position everyone fears, a few habits make an outsized difference:
The uncomfortable truth about positions is that no amount of reading substitutes for burning rods in them. Start flat to build puddle-reading instincts, move to horizontal to learn puddle control, take on vertical-up for patience, then face overhead with a smaller rod and a short arc. Each position teaches a skill the next one builds on — and once 4F and 4G feel routine, you can weld nearly anything a job site throws at you.
Every bad bead is a message. Spatter says the arc was too long, pinholes say the shield failed, and a groove along the toe says you outran the puddle. Experienced welders read a weld the way a mechanic reads an engine noise, and once you learn that language, the fix is usually one variable change, not new gear.
Below is the diagnostic chart most instructors wish they could hand out on day one. Find your symptom, apply the fix, run one test bead, then read it again.
| Problem | What causes it | Corrective action |
|---|---|---|
| 1. Porosity (pinholes) | Long arc, damp rods, contaminated plate, or wind dispersing the flux shield | Tighten the arc to about one rod diameter, clean and dry the joint, store rods sealed or in a rod oven, block drafts |
| 2. Slag inclusions | Skipping chip-and-brush between passes, or welding over a lumpy bead | Clean every pass, grind highs flat, slow down so the puddle flushes slag ahead. A written pipe welding procedure sets the required interpass cleaning |
| 3. Undercut | Travel too fast, arc too long, amps too hot at the joint edge | Slow down, shorten the arc, angle the rod at the undercut toe, cover it with an overlapping pass. Undercut has measurable acceptance limits in most codes |
| 4. Lack of fusion or penetration | Amps too low, wrong work angle, fast travel, rod too big for the joint | Raise current into the rod’s published range, use a proper drag (backhand) technique, slow travel, or drop a rod size |
| 5. Cold lap (overlap) | Long arc or low heat, so the puddle freezes before it wets the toes | Add 5–10 amps, keep the arc tight, and carry the puddle into both toes rather than down the center |
| 6. Excessive spatter | Wrong polarity, long arc, hot settings, or a damp covering | Confirm polarity, shorten the arc, trim amperage, fit a fresh rod from dry storage |
| 7. Sticking electrode | Slow arc start, arc held too tight on strike-off, or a contaminated tip | Strike like striking a match, lift to normal arc length immediately, and re-sharpen a burnt tip before restarting |
| 8. Arc blow | Magnetic deflection, most common on DCEP near the end of a joint | Switch to AC, move the work clamp to balance the circuit, or add a tack at the far end |
| 9. Cracked restarts | Unfilled craters, an abrupt arc break, or slag left on the restart point | Brush the spot, overlap the old bead about one rod diameter, and pause to fill the crater instead of snapping off |
| 10. Burning through | Amps too high, travel too slow, or a heavy rod on thin sheet | Drop the current, speed up, step down a rod size, stagger your tacks. Burn-through fixes for thin steel covers the full setup |
| 11. Worm tracks | Cracked or moisture-damaged flux, or an arc held too long over the puddle | Handle rods so the coating does not crack, store them dry, shorten the arc, discard rods with flaking covering |
| 12. Uneven, ropey beads | Inconsistent travel speed and arc length, plus watching the rod tip instead of the puddle | Watch the puddle’s leading edge, lock a steady arc length, brace your forearm, and drill straight beads before attempting any weave |
Quick Note: If the rod keeps sticking, your amperage is too low, the plate is cold, or your arc-start technique needs work. Those three account for almost every stuck electrode a beginner meets, and the fix is usually 10 amps and a faster strike.
Undercut gets flagged constantly because it creates a stress-raiser exactly where cracks start, usually from outrunning the puddle or letting the arc climb onto the plate instead of staying in the joint. Slow your travel until the puddle washes smoothly into the toe with no notch behind it. Codes such as AWS D1.1 publish explicit acceptance limits for undercut depth, so check AWS publications before you assume a small groove is acceptable.
Arc blow is magnetic, not technique. Current flowing through the workpiece creates a field that shoves the arc sideways, most often on DCEP approaching the end of a joint. Switching the machine to AC usually cures it instantly. If you must stay on DC, move the work clamp closer, reverse the leads, or add a tack at the stopping point. Worn, loose clamps make the imbalance worse, and a reliable cable connection solves problems people blame on the machine.
After every bead, run this loop before you strike the next one:
Most of these faults trace back to the same five variables covered earlier in this guide, which is why stick welding feels hard at first and then suddenly feels easy. Once you can name the defect out loud before you chip the slag, you have stopped guessing and started welding.
Every welding shop eventually has the same argument: which process is actually the best? The honest answer is that none of them is. Each of shielded metal arc (stick), gas metal arc (MIG) and gas tungsten arc (TIG) welding wins in a different set of conditions, and knowing which one to reach for is a skill just like running a clean bead. The good news is that the decision usually comes down to a handful of practical questions: where are you welding, what shape is the metal in, how fast do you need to move, and how much does the finished weld need to look like?
| Factor | Stick (SMAW) | MIG (GMAW) | TIG (GTAW) |
|---|---|---|---|
| Upfront cost | Lowest. One compact machine, cheap electrodes | Moderate. Wire feeder, gun, liner, contact tips | Highest. Precise machine, torch, tungsten, gas |
| Portability | Excellent. Rods, stinger, ground clamp | Fair. Machine plus a shielding gas cylinder | Fair to poor. Cylinder, foot pedal, torch setup |
| Wind tolerance | Best. Flux makes its own shield | Poor. Gas shield blows away easily | Poor. Same gas-shield vulnerability |
| Material condition | Tolerant of rust, paint, scale | Needs clean, grounded metal | Demands very clean material |
| Speed | Moderate | Fastest on clean, thin stock | Slowest |
| Learning curve | Steepest feel-based curve | Gentlest for beginners | Steepest overall skill demand |
| Appearance | Good with practice, needs cleaning | Smooth and consistent | Best-looking, minimal cleanup |
Wind is the deciding factor. Because the electrode coating breaks down into its own shielding gas and slag blanket, stick welding keeps working in conditions that ruin a gas shield. That single property is why SMAW still dominates outdoor construction, pipeline tie-ins, maintenance and farm repair, and it is the process taught first in most pipe welding procedures programs where field conditions are assumed. Stick equipment is also small enough to carry into a crawl space, a ditch or up a ladder, and it will run on rusty plate, painted pipe and contaminated steel that would only spit and sputter under a MIG gun.
Practical set-up matters as much as the process. A quick look at 3/32 E7018 amperage settings or 5/32 E7018 technique shows how quickly rod diameter and position change your numbers. If you are still building confidence, our guide on whether stick welding is hard sets realistic expectations before you burn your first rod.
If the metal is clean, the joint is accessible and productivity matters, MIG is hard to beat. Wire feeds continuously, so there are no rod changes, and the process is genuinely more forgiving: beginners typically produce acceptable welds in an afternoon rather than a week. It is also the best choice for thin sheet, because the heat can be dialed down finely and tacked quickly, which is where a MIG tack weld strategy saves hours of fit-up rework. The trade-off is logistics: you are tied to a cylinder, you must protect the gas envelope, and you should review MIG welding safety precautions before working with pressurized gas and a hot wire. Proper machine prep also prevents half of the problems people blame on the wire, as covered in how to set up a MIG welder. Outdoors without a windbreak, switch to flux core wire, which trades some cleanliness for wind resistance.
For stainless food-grade fittings, aluminum housings, thin-wall tubing and anything where the weld is a visible design feature, TIG is unmatched. You control heat and filler separately, so the bead profile and penetration are exacting, and the result is usually free of spatter and slag. The cost is speed and skill: one hand on the torch, one on the filler, often a foot on the pedal. For thin material specifically, settings and technique are covered in TIG welding sheet metal.
Quick Note: Many professionals learn MIG first because it produces good-looking welds quickly, but they are hired and judged on their stick and pipe credentials. Learn MIG for speed, then go deep on stick for career value.
Buy for the job you actually do, not the job you imagine. Most welders end up owning all three anyway.
Reading about technique only carries a stick rod so far. The arc doesn’t care how many articles you’ve studied; it responds to what your hands do in the next three seconds. The good news is that progress in SMAW is unusually measurable. A weld either freezes into even ripples at a consistent width, or it doesn’t. That immediate feedback is why a structured practice plan turns weeks of scattered burning into real skill.
Work through the weeks in order and don’t move on until the previous week’s beads look repeatable. Judge every pass the same way: uniform ripple spacing, consistent bead width, and a straight tie-in along both toes. Two nearly identical beads in a row means you’ve earned the next step.
| Week | Focus | Target |
|---|---|---|
| 1 | Stringer beads on flat plate, 1/4 in. mild steel | Three-inch drag beads with no starts or stops; consistent ripple spacing across the run |
| 2 | Butt joints, 1/4 in. plate, 1/8 in. gap | Tack, root pass fully fused, then a cap that stays within 1/16 in. of flush |
| 3 | T-joint fillets, 1F and 2F | Equal legs, smooth throat build-up, no toes that look like stacked bird droppings |
| 4 | Out-of-position: vertical-up and overhead | Controlled puddle in 3F/3G and 4F/4G without sagging or dropping filler |
Keep sessions short and deliberate. Twenty focused minutes beats two hours of mindless burning. Run a bead, chip the slag, look at it, and write one line about what happened. When out-of-position work begins, Overhead Stick Welding: The Complete Guide to 4F & 4G Technique, Amperage, and Rod Selection is worth keeping beside your machine.
Quick Note: Write your settings on the plate in soapstone: rod, diameter, amps, polarity, date. Two months later, that scrap pile becomes the most useful notebook you own.
Before you ask anyone else to look, run this checklist with a bright light and a wire brush:
Self-practice builds feel, but employers and inspectors need paperwork. Qualification follows documents such as the AWS D1.1 Structural Welding Code for steel and API 1104 for pipelines. Trade-school and employer-sponsored programs pair classroom code study with hands-on test plates in the exact position you’ll be certified for. If pipe is your goal, our Pipe Welding Procedures: The Complete Guide to WPS, Positions, Passes & Inspection walks through what test plates actually demand. Bring your own PPE or confirm the school supplies it — our Welding PPE: The Complete Guide to Protective Gear Every Welder Needs (2026) covers the essentials.
Note: Certification tests are open-book on the code but closed-book on your hands. Instructors and OSHA training requirements both assume you can already run a sound bead before you walk into the booth.
Here’s the lesson that beginner from the opening story eventually learned: technique is a feedback loop. Make one change, weld one bead, read the result, repeat. Turn the amps down fifteen, drag instead of push, watch the puddle freeze behind you — and that lumpy caterpillar turns into a clean, even ripple. Skill was never in the holder. It was in the next bead.
Start with a straight drag (backhand) technique, hold the arc length about equal to the electrode diameter, and keep travel speed steady enough to produce a bead roughly 2.5 to 3 times the rod’s diameter. Practice flat bead-on-plate runs with a forgiving E6013 rod before moving to joints or out-of-position work.
For most fillet and butt welds, hold the electrode about 5 to 15 degrees off perpendicular, dragging back in the direction of travel. Low-hydrogen E7018 rods often run closer to perpendicular or with a slight push, so check the manufacturer’s recommendation for the specific rod.
Stick welding is almost always a drag process, because dragging keeps the shielding gas from the flux in front of the molten pool. Pushing exposes the puddle to air and typically causes porosity and a weaker weld.
A common starting range for a 1/8 in E7018 in flat position is roughly 110 to 130 amps, then fine-tune by reading the puddle: too cold and the rod sticks or piles up, too hot and the bead goes fluid and flat with excessive spatter. Always adjust for position, thickness and machine.
Usually the current is too low, the base metal is cold, or the arc was started with a scraping motion instead of a quick lift. Increase amperage slightly, clean the start area, and practice a confident scratch or tap start — if it still sticks, switch the machine off before twisting the rod free.
Porosity most often comes from an arc that is too long, a dirty, rusty or oily joint, damp electrodes, or wind blowing away the shielding gas. Shorten the arc, grind the joint clean, store low-hydrogen rods in a heated rod oven or dry container, and shield the work from drafts.
Yes, most learners find stick harder initially because you manage a consumable electrode, arc length and slag all at once. The trade-off is that stick works outdoors, on rusty metal and without gas cylinders — which is why it remains essential for field and structural work.
Not really. Thin material needs lower amperage, smaller electrodes and faster travel to avoid burn-through, while thick material benefits from higher current, larger rods and multi-pass welds with interpass cleaning. Adjust your technique to the material rather than forcing one setting.
Many structural and pipe jobs require a performance qualification test under a code such as AWS D1.1 for steel structures or API 1104 for pipelines, witnessed and documented by a certified inspector. Hobby or repair work generally does not, but certification dramatically improves employability.
Watching the arc instead of the puddle. The puddle’s leading edge reveals penetration, speed and heat; staring at the bright arc hides that feedback and leads to long arcs, inconsistent speed and ugly, weak beads.