Technical Foundation
What Is a Stick Welder?
Stick welding (SMAW, shielded metal arc welding) strikes an arc between a flux-coated consumable electrode and the workpiece, with the flux coating burning to form a shielding gas and slag layer that protects the weld pool — no separate shielding gas cylinder is needed, which is the main reason stick welding remains the standard choice for outdoor, windy, and field repair work where gas-shielded processes like MIG would be disrupted. Output can be AC, DC, or switchable AC/DC; DC generally gives a smoother arc and is required for certain electrode types (like 7018 low-hydrogen rod), while AC is preferred for some cast iron and certain out-of-position work.
Machine sizing follows the electrode diameter and material thickness you need to run, not just an amperage number in isolation — a 1/8 inch 7018 electrode typically needs roughly 90-150 amps depending on position and joint, and the machine's duty cycle (the percentage of a 10-minute period it can weld at rated amperage before needing to cool) determines whether it can sustain that output through continuous production welding or only intermittent repair work. Inverter-based machines have largely replaced heavier transformer designs for portable and field use due to their lighter weight and better arc control at a given amperage.
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| Spec | What It Means | Why It Matters |
|---|---|---|
| Output Type | AC, DC, or switchable AC/DC | DC required for certain low-hydrogen electrodes (e.g. 7018); AC preferred for some cast iron and specific positions |
| Amperage Range | Rated min-max output current | Must cover the amperage range required by your typical electrode diameter and material thickness |
| Duty Cycle | % of 10-minute period at rated amperage (e.g. 60% @ 200A) | Low duty cycle machines overheat and shut down under sustained production welding |
| Power Input | 120V, 240V single phase, or engine-driven | Determines what power source is available and portable to the work location |
| Machine Type | Inverter, transformer, engine-driven | Inverters are lighter and give finer arc control; engine-driven units work with no grid power at all |
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Applications
Where Stick Welders Get Used
Stick welders are specified anywhere gas-shielded processes are impractical — outdoors, in wind, on dirty or rusty material, or where portability without gas cylinders matters.
Structural & Field Construction
Portable stick welders running low-hydrogen electrodes on structural steel connections in outdoor, windy conditions.
Pipeline & Pipe Welding
Stick welding's tolerance for wind and lack of shielding gas requirement make it standard for cross-country pipeline work.
Farm & Equipment Repair
General-purpose AC/DC stick welders repairing agricultural equipment, trailers and structural steel on-site.
Shipbuilding & Heavy Fabrication
High duty cycle stick welders used for thick-section structural and hull welding.
Maintenance & Repair Welding
Portable inverter stick welders for MRO repair work where gas-shielded processes are impractical outdoors.
Brands
Stick Welders Brands in the Catalogue
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FAQ
Stick Welders Questions, Answered
Should I choose an AC, DC, or AC/DC stick welder?
DC output generally gives a smoother, more stable arc and is required for low-hydrogen electrodes like 7018, which is why most modern general-purpose stick welders default to DC or offer switchable AC/DC. AC is preferred for certain applications like cast iron repair and can help reduce arc blow in some DC welding scenarios — a switchable AC/DC machine gives the most flexibility if you're not certain which you'll need.
What amperage stick welder do I need for 1/8 inch 7018 electrode?
1/8 inch (3.2mm) 7018 low-hydrogen electrode typically runs in the range of roughly 90-150 amps depending on joint position and configuration — check the electrode manufacturer's amperage chart for your specific position (flat, vertical, overhead) since out-of-position welding generally runs at lower amperage than flat position.
What does duty cycle mean, and why does it matter for a stick welder?
Duty cycle is the percentage of a 10-minute period the machine can weld continuously at its rated amperage before it needs to cool down to avoid overheating — a welder rated 60% duty cycle at 200A can weld for 6 of every 10 minutes at that amperage. Low duty cycle machines are fine for intermittent repair work but will thermally shut down under continuous production welding, so match duty cycle to your actual usage pattern, not just peak amperage needs.
Why is stick welding still used instead of MIG or TIG for field work?
Stick welding doesn't require a shielding gas cylinder — the electrode's flux coating provides its own shielding as it burns — which makes it far more tolerant of wind and outdoor conditions that would blow away the gas shield on a MIG or TIG setup and ruin the weld. This is why stick remains the standard for pipeline, structural steel erection, and other outdoor field welding despite MIG and TIG generally offering faster travel speed and cleaner welds in a shop environment.
Do I need an engine-driven welder, or is a plug-in inverter machine enough?
If grid power is available at the work location, a plug-in inverter or transformer machine is lighter, cheaper, and easier to maintain. Engine-driven welders are necessary for remote fieldwork, pipeline construction, or jobsites without reliable grid power, and many also double as a generator for powering other equipment on-site.
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