Best Welders for Farm and Ranch Use (2026)

A welder on the farm is not a luxury. It is one of the most practical tools you can own. Broken implement brackets, cracked trailer frames, torn fencing, worn bucket edges on a loader --- the list of things that need metal joined back together never ends. And on most operations, calling a mobile welder or hauling equipment to town is not realistic when you need something fixed by morning.

The best welder for farm use has to handle dirty, rusty metal. It has to work outdoors in wind. It needs enough power for thick structural steel but should not require a dedicated 50-amp circuit that does not exist in half your outbuildings. And ideally, it should be simple enough that you are not spending an hour dialing in settings when a hay rake needs to be back in the field.

Quick Comparison

Our Top Picks

Lincoln Electric AC-225 Tombstone --- Best Stick Welder for Farm Use

The Lincoln AC-225 has been the default farm welder for decades, and for good reason. This is a transformer-based AC stick welder with no circuit boards, no digital displays, and almost nothing to break. Plug it into a 230V outlet, set your amperage with the crank, and strike an arc.

For farm work, the AC-225 excels at welding dirty, rusty, painted steel --- the kind of metal you actually deal with on equipment. Running 6011 rods, it burns through contamination that would choke a MIG welder. It handles material from 16-gauge sheet up to 3/8-inch plate without issue, and with the right rod you can push it into 1/2-inch territory.

What stands out:

• Near-indestructible design. Units from the 1970s are still running on farms today.
• Smooth AC arc that works well with 6011 and 7018 rods.
• 225-amp output handles the vast majority of structural farm repairs.
• No maintenance beyond keeping it dry and occasionally blowing out dust.
• Extremely affordable for the capability you get.

Limitations:

• AC only. No DC output means you cannot run certain specialty rods (some low-hydrogen, stainless, hardfacing rods prefer or require DC).
• Heavy at 100+ pounds. This stays in the shop --- you are not carrying it to the back forty.
• No MIG or TIG capability.
• Requires 230V, 50A circuit.

If you want one welder that will outlast you and handle 80% of farm steel repairs with minimal fuss, the AC-225 is hard to beat. See our full stick welder roundup for more options.

Miller Multimatic 215 --- Best Multi-Process Welder for the Farm

The Multimatic 215 is the Swiss army knife of farm welders. It runs MIG, flux-core, DC stick, and DC TIG (with lift-arc start) from a single compact unit. If you want one machine that can do everything from welding a fender patch to repairing a heavy implement frame, this is the one.

Miller’s Auto-Set feature is genuinely useful on the farm. Select your wire diameter and material thickness, and the machine dials in voltage and wire speed automatically. When you are under a combine trying to get a repair done before rain moves in, you do not want to fiddle with settings.

It runs on both 120V and 240V power, which matters on a farm where not every building has the same electrical service. On 120V, you are limited to lighter work (up to about 3/16-inch), but on 240V it delivers a full 230 amps.

What stands out:

• True multi-process: MIG, flux-core, stick, and TIG in one machine.
• Auto-Set Elite makes dialing in parameters fast and accurate.
• Dual voltage (120/240V) adds real flexibility across the property.
• Excellent arc quality on all processes.
• Relatively portable at 38 pounds.

Limitations:

• Significantly more expensive than a single-process machine.
• More electronic components means more potential failure points compared to a transformer machine.
• 60% duty cycle at rated output; heavy continuous welding will require cool-down breaks.
• TIG requires a separate purchase of a TIG torch.

For a deeper look at multi-process options in this price range, check our multi-process welder guide.

Hobart Ironman 240 --- Best MIG Welder for Heavy Farm Work

If MIG is your primary process and you do a lot of heavy fabrication --- building gates, repairing trailer frames, rebuilding loader buckets --- the Ironman 240 is a workhorse. It delivers up to 280 amps and has a true industrial-grade wire drive that will not stall on .035 or .045 wire.

The Ironman runs on 240V and has a 60% duty cycle at 200 amps, which means you can lay long beads on thick steel without constant thermal shutdowns. The cast-aluminum drive system feeds wire smoothly and consistently, which translates to cleaner welds with less spatter.

This is a shop machine. At over 100 pounds and requiring 240V power, it is not something you haul around the property. But for the farm shop where you do serious metalwork, it is a significant step up from lighter-duty MIG welders.

What stands out:

• 280-amp output handles heavy plate and multi-pass structural welds.
• Industrial wire drive feeds flawlessly with solid or flux-core wire.
• Excellent duty cycle for sustained welding on big projects.
• Built to last --- heavy-gauge steel case, quality internal components.
• Runs both MIG (gas-shielded) and flux-core.

Limitations:

• 240V only. No 120V option.
• Heavy and not portable. This is a fixed shop welder.
• Requires a quality gas regulator and cylinder setup for MIG mode.
• Higher price point than lighter-duty MIG machines.
• Stick and TIG not available.

Lincoln Ranger 225 Engine-Driven --- Best for Field Repairs

When a fence post breaks in a pasture a half-mile from any outlet, or a disc frame cracks in the middle of a field during planting, the Ranger 225 is the machine that actually solves the problem. This is a gasoline engine-driven welder/generator that produces its own power anywhere you can drive a truck or ATV.

The Ranger delivers 225 amps of DC welding power and runs all common processes: stick, MIG, flux-core, and TIG. The Kohler gasoline engine also produces 10,500 watts of generator power, so you can run a grinder, lights, or other tools simultaneously. For remote farm work, this combination of welder and generator is difficult to replace with any other single piece of equipment.

What stands out:

• Complete independence from electrical infrastructure. Weld anywhere on the property.
• 225 amps DC handles everything from light sheet metal to heavy structural steel.
• 10,500-watt generator output powers auxiliary tools (grinder, drill, lights).
• Runs all processes: stick, MIG, flux-core, and TIG.
• Smooth DC arc produces high-quality welds with all rod types.

Limitations:

• Expensive. This is a serious investment.
• Heavy (about 500 pounds). Requires a truck bed or trailer to move.
• Gasoline engine requires ongoing maintenance: oil changes, fuel stabilizer, air filters.
• Noisy operation compared to inverter welders.
• Fuel cost adds to operating expense.

If you run cattle on large acreage or farm ground that is spread out, an engine-driven welder often pays for itself the first season by eliminating downtime.

Forney Easy Weld 298 --- Best Budget MIG/Flux-Core Option

The Forney 298 is a 120V MIG and flux-core welder that costs about what you would spend on a decent grinder. It maxes out at 90 amps, which limits you to thinner material (up to about 3/16-inch in a single pass), but for light farm tasks --- patching a feed trough, tacking brackets, repairing sheet metal on buildings --- it handles the job.

Running on a standard 120V household outlet makes this the most accessible welder on the list. If you have never welded before and want to start handling minor farm repairs yourself, the Forney 298 has a very gentle learning curve, especially in flux-core mode where you do not need a gas bottle.

What stands out:

• Extremely affordable entry point into welding.
• Runs on any standard 120V, 20A outlet.
• Simple controls. Practically no setup required for flux-core.
• Light and portable at under 20 pounds.
• Good wire feed quality for the price.

Limitations:

• 90-amp maximum severely limits material thickness capability.
• Not suitable for heavy structural repairs, thick plate, or critical load-bearing welds.
• 120V input means limited power headroom. Extension cords cause further voltage drop.
• Low duty cycle; you will be waiting for cool-down on anything beyond short tack welds at higher settings.
• Will not replace a proper farm welder for serious work.

For a broader look at lightweight options, see our guide on portable welding machines.

YesWelder ARC-205DS --- Budget Stick Option

The YesWelder ARC-205DS is a compact inverter stick and lift-TIG welder that runs on both 120V and 240V power. At under $200, it gives you DC stick welding capability that the Lincoln AC-225 cannot match on certain rod types --- specifically low-hydrogen 7018, stainless, and hardfacing rods that perform better on DC.

For the money, the arc quality is surprisingly smooth. It runs 6011, 6013, 7018, and hardfacing rods without much drama. The dual-voltage input means you can plug it in almost anywhere on the farm, and at 11 pounds, you can literally carry it in one hand to wherever the work is.

What stands out:

• DC output runs the full range of stick electrode types including 7018 and hardfacing.
• Dual voltage (120/240V) works with whatever outlet is available.
• Extremely lightweight and portable at 11 pounds.
• Hot start and arc force adjustability help with rod striking and puddle control.
• Very low cost for a DC stick welder.

Limitations:

• Long-term durability is unproven compared to established brands.
• 120V mode limits output to roughly 130 amps, restricting you to 3/32-inch rods.
• Duty cycle ratings are optimistic; expect thermal shutdowns during extended welding at higher amperages.
• Customer support and warranty service are not on par with Lincoln, Miller, or Hobart.
• No MIG capability.

Why Farm Welding Is Different

Farm and ranch welding is not like welding in a fabrication shop. Understanding the differences matters when choosing equipment.

Dirty, rusty, painted metal is the norm. You are almost never welding clean, prepped steel on a farm. Implements come in caked with dirt. Trailer frames are rusted. Old equipment has layers of paint. This is why stick welding remains the dominant process on farms --- a 6011 rod digs through contamination that would cause porosity and poor fusion with MIG wire.

Thick material is common. Implement frames, loader arms, trailer tongues, and plow beams are often 3/8-inch plate or heavier. You need a machine with enough amperage to achieve proper penetration on structural material. A 90-amp 120V welder will not cut it for these repairs.

Outdoor conditions are unavoidable. Wind is the enemy of gas-shielded welding. If you are running MIG with shielding gas outside, even a 10 mph breeze can blow your gas coverage away and leave you with porous, weak welds. Stick welding and self-shielded flux-core work in wind because the flux coating or flux core generates its own shielding. This is a major consideration for any farm welder purchase.

Portability versus power is a constant trade-off. The repair is rarely where your best power outlet is. Engine-driven welders solve this completely but cost four to ten times more than a plug-in machine. Long, heavy-gauge extension cords are a partial solution, but voltage drop over distance reduces welding performance. Plan your shop electrical service accordingly.

Repairs are often structural and load-bearing. A cracked implement tongue or broken three-point hitch bracket is going to see serious stress. These are not cosmetic welds. Proper penetration, correct rod selection, and adequate amperage matter for safety.

Stick vs. MIG for Farm Work

This is the fundamental question for most farm buyers, and the honest answer is that most farms benefit from having both. But if you can only choose one process, here is how they compare for agricultural use.

Stick welding wins for:

• Dirty, rusty, or painted metal (no prep required in many cases)
• Outdoor welding in wind (self-shielding flux coating)
• Thick material penetration
• Simplicity (no gas bottles, no wire feed to maintain)
• Low equipment cost
• Portability (just the machine, a stinger, and a box of rods)

MIG welding wins for:

• Speed on clean material (2-3 times faster than stick on thin to medium steel)
• Thinner material without burn-through (easier to control heat input)
• Cleaner welds with less spatter and no slag to chip
• Easier learning curve for beginners
• Sheet metal repair and body work on farm trucks and equipment

The practical recommendation: If you do mostly heavy equipment repair, fence work, and structural jobs on old steel, a stick welder (or a multi-process machine in stick mode) is your primary tool. If you build new projects in the shop --- gates, feeders, equipment mods --- with new steel, MIG saves significant time.

Self-shielded flux-core wire is a useful middle ground. It runs through a MIG welder but does not need shielding gas, making it usable outdoors in moderate wind. Penetration is better than standard MIG on thicker, dirtier material. The trade-off is more spatter and rougher bead appearance than gas-shielded MIG.

Frequently Asked Questions

What is the best all-around welder for a small farm?

For a small farm with a 240V outlet in the shop, the Lincoln AC-225 is the most reliable, lowest-maintenance option. It handles the vast majority of stick welding repairs on equipment, trailers, and fencing. If you want more versatility and can spend more, the Miller Multimatic 215 covers all processes in one machine.

Can I use a MIG welder for farm repairs?

Yes, but with caveats. MIG works best on reasonably clean metal in a shop environment with no wind. For outdoor repairs on dirty or rusty steel, you will get better results with stick welding or self-shielded flux-core wire. If you go MIG, use flux-core capability as your backup for outdoor work.

What size welder do I need for farm equipment?

Most farm equipment repair requires at least 180-200 amps to properly weld 3/8-inch plate in a single pass. For lighter tasks like fencing and sheet metal, 130-150 amps is adequate. If you regularly work on heavy implements, loader frames, or trailer structural members, 200+ amps gives you the headroom you need.

Do I need an engine-driven welder?

Only if you regularly weld in locations without electrical power. If most of your welding happens in or near a shop or outbuilding with 240V service, a plug-in welder is more cost-effective and requires less maintenance. Engine-driven welders make sense for large ranches, field service operations, or properties where electrical infrastructure is limited.

What welding rods should I keep on hand for farm work?

Stock three types: 6011 for general-purpose dirty-metal welding and out-of-position work. 7018 for structural repairs where you need maximum strength and cleaner beads (requires dry storage or a rod oven). 6013 for thinner material and sheet metal where burn-through is a concern. If you deal with wear parts like bucket edges or plow shares, keep hardfacing rods (such as Stoody or Lincoln Wearshield) on hand as well.

Is 120V welding powerful enough for farm use?

For light-duty tasks only. A 120V welder typically maxes out around 90-140 amps depending on the machine, which limits you to material roughly 3/16-inch and under. Most serious farm repairs involve thicker steel. A 120V machine can be a useful secondary welder for small jobs, but it should not be your only welder if you are doing real equipment maintenance.

The Bottom Line

The best welder for your farm depends on what you are fixing and where you are fixing it. For most operations, here is the decision framework:

• On a budget with a 240V outlet: Lincoln AC-225. It is the most proven farm welder ever made.
• Want one machine that does everything: Miller Multimatic 215. Versatile, portable, and excellent on every process it runs.
• Do heavy fabrication and MIG work in the shop: Hobart Ironman 240. Serious MIG capability for serious projects.
• Need to weld in the field away from power: Lincoln Ranger 225. Nothing else solves the remote-welding problem as completely.
• Tight budget, light-duty work: Forney Easy Weld 298 for MIG/flux-core or YesWelder ARC-205DS for stick.

A quality welder is one of the best investments you can make on a farm or ranch. The money you save on the first few repairs you handle yourself --- instead of paying a shop or waiting on a mobile welder --- covers the cost of the machine. After that, it is pure upside every time something breaks, which on a farm is always sooner than you expect.

Related Articles

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• Best Welding Gloves — hand protection matched to your welding process
• Welding Safety Gear Checklist — complete PPE setup for farm welding

Duty Cycle and Amperage: Matching a Machine to the Job, Not Just the Metal

Duty cycle is the number farm buyers skip past and regret later. It’s the percentage of a ten-minute window a welder can run at its rated output before the transformer or inverter overheats and cuts out. A machine that looks powerful on the spec sheet can still trip its thermal overload halfway through a long seam on a trailer frame if the duty cycle at that amperage is low. For short, intermittent farm repairs — a cracked bracket, a torn hitch mount — duty cycle rarely matters, because you’re not welding continuously for minutes at a time. For rebuilding a loader bucket edge or running a full pass down a gate rail, it does. The fix isn’t always a bigger machine; it’s welding at a lower amperage setting with more passes, or picking a unit with a higher duty cycle rating at the amperage you actually use most.

Amperage needs also scale with material thickness in a way that surprises first-time buyers. A welder that handles 3/16-inch mower deck steel with room to spare can struggle on 1/2-inch drawbar stock, especially in a single pass. Farm equipment mixes thin sheet (fenders, guards) with thick structural steel (frames, hitches, buckets) on the same piece of machinery, which is why most farms end up wanting headroom above their most common job rather than a machine sized exactly to it.

Running a Welder Without Shop Power

Not every repair happens near an outlet. Fence lines, pastures, and fields away from the barn are where farm welding differs most from shop or garage welding, and it’s also where equipment choice gets complicated fast.

An engine-driven welder solves this directly — it generates its own power off a gas or diesel motor, so amperage output isn’t tied to a breaker panel at all. The tradeoff is weight, fuel upkeep, and a machine that’s overkill for anything done in the shop.

A generator is the other route, but it has to be sized and rated correctly. Welding draws a different kind of current than running lights or a shop fan, and inverter-type welders are generally far more forgiving of generator power fluctuations than older transformer-based machines, which can run rough or underperform on an undersized or non-inverter generator. Voltage sag under load is the usual failure mode: the welder seems to work, then the arc goes weak or unstable mid-bead as the generator struggles to keep up. Before relying on a generator for field repairs, check the welder’s rated input amperage against the generator’s continuous output, not its peak rating — peak numbers are misleading for something as demanding as welding.

Keeping a Farm Welder Working Through Dust, Damp, and Neglect

Farm shops are hard on equipment that wasn’t built for them. Grain dust, chaff, and general airborne grit get pulled into a welder’s cooling fan and settle on internal components, where they insulate heat instead of letting it escape — this is one of the more common reasons an otherwise healthy machine starts tripping its thermal protection sooner than it used to. Periodically blowing out the case with low-pressure compressed air (not high-pressure, which can drive dust further into components) keeps airflow clear.

Moisture is the other recurring issue. Unheated outbuildings swing through condensation cycles, and welding cable, MIG guns, and stick electrode holders all have connection points where corrosion can creep in. Storing rod in a sealed container — cardboard sleeves absorb ambient moisture and cause damp electrodes, which weld poorly and can porosity-riddle a bead — matters more in a barn than it would in a climate-controlled garage. Wire spools for MIG welders face the same problem; rusty wire feeds inconsistently and can bind in the liner.

For transformer-based machines with few electronics, dust and rust are mostly what shortens their working life. For inverter and multi-process machines, the circuit boards add another failure point — keeping the unit off a bare dirt floor and out of direct weather exposure protects components a simple stick welder doesn’t have to worry about.

Check Your Outlets and Cords Before Choosing a Welder

Most farm welder problems start with the electrical supply, not the machine. A 240V welder needs a dedicated circuit sized to the input current on its nameplate. A shop with only 120V receptacles, or a barn fed by a long, thin run from the house, will not support a full-output 240V machine no matter what the spec sheet says. Read the rated input amps and recommended breaker size on the welder you are considering. Then check what the outbuilding where you will use it actually has.

Dual-voltage inverter machines are the usual answer to mixed electrical service. They draw less current at the same output, and they let you weld light repairs on a 120V outlet and heavy work on 240V. The tradeoff is power. On 120V the available output is limited, so thick plate calls for preheating, multiple passes, or moving the job to the 240V shop. Don’t expect a 120V outlet to give you a 240V machine’s penetration.

Extension cords are the second trap. A long or undersized cord drops voltage under load. The welder then runs hot or won’t hold its rated output, and tripped breakers often follow. If a job has to be done away from a receptacle, run a short, heavy-gauge cord from the nearest outlet, or weld with an engine-driven machine. Don’t daisy-chain light-duty cords. Inverter machines also tend to be more sensitive to poor supply than a simple transformer welder, and long cords or an underpowered portable generator can cause faults or erratic arcs.

Matching the Repair to the Process

The kind of metal and where you are standing matter as much as thickness. These are the repairs that come up most often on a farm, and the process that tends to suit each:

• Rusty, painted, or greasy structural steel (implement frames, trailer hitches, gate hinges): Stick with a cellulosic or general-purpose rod handles surface contamination better than solid-wire MIG. Grinding to bright metal at the joint is still worth the time.
• Outdoor repairs in wind: Solid-wire MIG depends on shielding gas, and a breeze can blow it away and leave porous welds. Stick and self-shielded flux-core carry their own shielding, so they hold up better in the open. If you buy a gas-capable MIG machine, expect to move the work or build a windbreak for outdoor jobs.
• Thin sheet (fenders, tin, light panels): MIG or a lower-amp inverter stick setup gives more control. A high-amperage AC transformer welder is easy to burn through with on thin material.
• Worn edges, bucket teeth, and tillage points: Hardfacing rods are the usual approach. Check the rod maker’s polarity requirements before assuming your machine can run them, since some prefer DC.
• Cast iron parts: These usually call for nickel-type rods and controlled heat. Treat them as a separate skill from mild-steel repair, because a bad weld can crack the casting.
• Galvanized fencing and gates: The zinc coating gives off hazardous fumes when heated. Grind it off the weld zone and ventilate well, or work outdoors upwind.

If your repairs are mostly in the first two categories, a stick-capable machine covers most of your needs at the lowest cost. If you also do fabrication, thin sheet, or shop projects, a MIG or multi-process unit starts to justify its price.

What Spending More Gets You, and What It Doesn’t

Moving up the price ladder buys specific things. A higher duty cycle lets you weld longer before the machine shuts down on thermal overload. That matters for multi-pass work on heavy plate and does little for a quick bracket tack. Inverter designs bring lighter weight, smoother arc control, and wider input flexibility. Transformer machines trade those features for fewer electronic parts to fail. A better wire drive keeps feeding when the wire is slightly dirty or the spool is nearly empty, instead of birdnesting in the drive rolls. Engine-driven machines add the ability to weld, and often run tools, anywhere you can drive a truck.

Money does not fix a mismatch between machine and electrical service, or between process and conditions. A premium MIG machine is still the wrong tool for windy, rusty fence repair. A big engine-driven unit is poor value if nearly all your welding happens within reach of a good outlet.

Upkeep and common failure points are worth planning for. MIG machines need clean, dry wire, replacement contact tips, and liners. Wire that has picked up rust or moisture feeds badly and welds poorly. Stick rods, especially low-hydrogen types, absorb moisture and need dry storage, as the maker’s instructions specify. Dust that gets inside a machine can block cooling airflow, so blow out vents regularly, especially on units kept in a hay barn or on a dirt-floor shop. Engine-driven welders need the usual engine care: fresh fuel, oil changes, and air filter checks. A machine that sits unused for months should be started and run before you need it for a time-sensitive repair.

Choose the Welder Around Where the Repair Happens

A shop-based machine and a field-repair machine solve different problems. For repeated work on gates, buckets, trailers, and implements near a suitable outlet, a 240V MIG welder offers fast deposition and convenient starts. Solid wire needs shielding gas, so wind can disrupt the gas envelope and create porous welds; self-shielded flux-core wire or stick electrodes are usually more practical outdoors. A dual-voltage multiprocess welder is easier to move between buildings, but connecting it to 120V limits the output available for thick steel and sustained welding.

For repairs beyond extension-cord reach, choose an engine-driven welder or verify that an inverter welder is explicitly compatible with the generator you intend to use. Match the welder’s input-voltage and current requirements to the generator’s continuous output, receptacle, and breaker—not merely its advertised peak wattage. Engine-driven machines remove that electrical dependency and may provide auxiliary power, but they add fuel, battery, oil, and storage maintenance. Paying more here buys field independence; it does not automatically produce a better shop welder.

Confirm Consumable and Accessory Compatibility Before Buying

A process label alone does not tell you what the machine can actually run. For stick welding, check whether the power source provides AC, DC, or both, then match electrode type and polarity to the electrode manufacturer’s directions. That matters when moving beyond general repair rods into low-hydrogen, stainless, or hardfacing consumables. Also confirm that the electrode diameters you plan to use fall within the machine’s practical output range.

For MIG and flux-core machines, verify supported wire diameters, spool sizes, drive-roll grooves, gun connection, liner size, contact tips, and polarity switching. Solid wire with shielding gas and self-shielded flux-core wire commonly require different polarity, but the wire label and machine chart are the final authority. If aluminum MIG work is planned, confirm whether the machine accepts a spool gun or another suitable feeding system; pushing soft aluminum wire through a long standard liner can cause feeding problems.

Multiprocess does not mean every accessory is included or every version of each process is available. A lift-start, DC-only TIG mode is useful for steel but is not a substitute for an AC-capable TIG system when conventional aluminum TIG welding is required. Higher-priced machines may provide a better wire drive, longer duty cycle, broader adjustment, replaceable guns, and stronger service support, but those advantages do not cure an incompatible torch, feeder, consumable, or power supply.

Diagnose the Setup Before Blaming the Welder

Many apparent machine failures begin elsewhere in the welding circuit. An undersized branch circuit or a long, light-gauge extension cord can cause voltage drop, weak arc performance, nuisance breaker trips, or repeated thermal shutdowns. A loose work clamp, dirty contact point, damaged lead, incorrect polarity, or worn MIG contact tip can produce an unstable arc even when the power source is operating normally. Wind-related porosity with gas-shielded MIG is a process problem, not a reason to increase voltage until the bead looks hotter.

Farm conditions create predictable upkeep needs. Keep wire spools and electrodes dry, protect cable insulation from sharp edges and tires, clean spatter from the MIG nozzle, replace grooved contact tips, and clear dust from cooling openings without forcing debris deeper into the machine. Engine-driven welders also need the engine maintenance specified by their manufacturer, including attention to stored fuel and the starting battery.

Before replacing or upgrading a welder, repeat the job with clean metal, a sound work connection, fresh consumables, correct polarity, and power that meets the nameplate requirements. If performance deteriorates only after sustained welding, compare the work pattern with the machine’s duty-cycle chart. A larger machine may solve that limitation; changing machines will not solve contaminated metal, damp consumables, poor grounding, or lost shielding gas.