MIG vs TIG vs Stick: Choosing the Right Welding Process

Three Processes, Three Different Jobs

MIG, TIG, and stick welding are all arc welding processes — they all use electricity to melt metal and fuse it together. But that's where the similarities end. Each process has a different feed mechanism, different shielding method, different skill requirements, and different strengths. Choosing the right one isn't about which is “better” — it's about which is right for the material, the position, the environment, and the quality requirements of the specific job.

Here's a practical breakdown from someone who runs all three.

MIG Welding (GMAW): The Speed King

MIG — Metal Inert Gas, officially GMAW (Gas Metal Arc Welding) — uses a continuously fed wire electrode and an external shielding gas to protect the weld pool. You pull the trigger, wire feeds out, gas flows, and you weld. It's the most beginner-friendly process and the fastest for production work.

The wire does double duty as both the electrode (carrying the arc) and the filler metal (adding material to the joint). Common wire diameters are 0.023″, 0.030″, 0.035″, and 0.045″. Thinner wire for thinner material, thicker wire for heavier work. Shielding gas is typically 75% argon / 25% CO2 for carbon steel, or 100% argon for aluminum and stainless.

Where MIG excels

• Production speed. MIG is the fastest manual welding process. The continuous wire feed means no stopping to change electrodes. For fabrication shops running mild steel all day, MIG is hard to beat.
• Learning curve. A complete beginner can lay a reasonable bead on flat mild steel within an hour of instruction. Getting good takes practice, but getting started is quick.
• Thin to medium material. MIG handles everything from 24-gauge sheet metal to 1/2″ plate in a single pass (with the right wire and settings). For auto body, furniture, trailers, and general fabrication, it's the go-to.
• Long continuous welds. A spool of wire lasts for hours. No stopping, no slag to chip. Weld, grind if needed, paint.

Where MIG falls short

• Outdoor work. Wind blows away the shielding gas, causing porosity. Even a 10 mph breeze can ruin a MIG weld. You can use windscreens, but for truly outdoor work, stick or flux-core is more practical.
• Thick material. Anything over 3/8″ in a single pass requires high amperage and a larger machine. Multi-pass MIG works, but stick is often more practical for heavy structural work.
• Precision and aesthetics. MIG welds are functional and clean, but they don't have the stacked-dimes appearance of a good TIG weld. For visible work on stainless or aluminum where appearance matters, TIG wins.

Equipment needed: MIG welder (110V for light work, 220V for serious use), wire spool, shielding gas bottle and regulator, welding helmet, gloves, pliers. Entry-level 220V machines start around $500-800.

TIG Welding (GTAW): The Precision Tool

TIG — Tungsten Inert Gas, officially GTAW (Gas Tungsten Arc Welding) — uses a non-consumable tungsten electrode to create the arc and a separate filler rod that you feed by hand. Shielding gas is almost always 100% argon. You control the heat with a foot pedal or torch-mounted amperage control, and you dip the filler rod into the puddle with your other hand. It's a two-handed process that demands coordination.

Where TIG excels

• Weld quality and appearance. A skilled TIG welder produces the cleanest, most precise welds of any manual process. The stacked-dimes pattern on a TIG weld is the gold standard. For stainless steel food equipment, aerospace components, and anything that will be visible, TIG is the process.
• Thin material. TIG gives you precise heat control down to single-digit amps. Welding 0.030″ stainless sheet, titanium bicycle frames, or aluminum soda cans (if you're showing off) — TIG handles it. No other process comes close on thin material.
• Material versatility. TIG welds steel, stainless, aluminum, chromoly, titanium, copper, and exotic alloys. Change the filler rod and gas (argon for everything, with helium mix for aluminum sometimes), adjust the settings, and you can weld almost anything.
• No spatter, no slag. TIG welds are clean as-welded. On stainless and aluminum, a good TIG weld needs no post-weld cleanup at all.

Where TIG falls short

• Speed. TIG is slow. Where a MIG welder lays a bead in seconds, TIG takes minutes for the same length. For production work on mild steel, TIG is impractical.
• Learning curve. TIG is the hardest manual welding process to learn. You're controlling torch angle, arc length, travel speed, filler dipping, and heat simultaneously. Most welders need months of practice before their TIG work is production-quality.
• Wind sensitivity. Like MIG, TIG relies on shielding gas and is unsuitable for windy outdoor conditions.
• Thick material. TIG's low deposition rate makes it impractical for heavy plate. You can TIG-weld 1″ steel, but it will take a very long time with many passes.

Equipment needed: TIG welder with HF start and AC/DC capability (for aluminum), argon bottle and regulator, foot pedal, tungsten electrodes (2% lanthanated is the all-purpose choice), filler rods, helmet with shade 10-13, TIG gloves (thinner than MIG gloves for dexterity). Quality AC/DC TIG machines start around $800-1500.

Stick Welding (SMAW): The Field Warrior

Stick — officially SMAW (Shielded Metal Arc Welding) — is the oldest and simplest arc welding process still in widespread use. You clamp a flux-coated electrode (the “stick” or “rod”) into a holder, strike an arc, and weld. The flux coating melts along with the rod, creating its own shielding gas and a protective slag layer over the weld. No external gas bottle needed.

Where stick excels

• Outdoor and field work. Wind doesn't matter — the flux creates its own shielding. Pipeline welders, structural ironworkers, and maintenance welders in the field rely on stick precisely because the environment is uncontrolled.
• Dirty and rusty material. Stick is the most forgiving process for less-than-perfect base metal. A 6011 rod will burn through rust, mill scale, and light oil. Try that with MIG or TIG and you get porosity and contamination.
• Thick material and structural work. Stick welding with 7018 low-hydrogen rods is the standard for structural steel per AWS D1.1. Heavy plate, multi-pass groove welds, all-position work on I-beams — stick handles it.
• Portability. A stick welder, a stinger, a ground clamp, and a box of rods. That's the entire setup. No gas bottles, no wire feeders, no regulators. Run it off a generator in the middle of a field.
• All-position capability. Stick is the standard for vertical, overhead, and pipe welding. Rods like 7018 and 6010 are specifically designed for out-of-position work.

Where stick falls short

• Speed and efficiency. You stop every time a rod is consumed (every 1-2 minutes). Each stop means chipping slag, brushing the weld, and starting a new rod. Deposition rate is lower than MIG.
• Thin material. Stick is difficult on anything under 1/8″. The minimum amperage on most rods will blow through thin sheet metal. This is MIG and TIG territory.
• Cleanup. Every stick weld has a slag coating that must be chipped and wire-brushed before the next pass or before painting. It's tedious but necessary — slag inclusions are a structural defect.
• Learning curve. Starting and maintaining a consistent arc takes practice. Rod angle, travel speed, and arc length all affect the weld. It's easier to learn than TIG but harder than MIG.

Equipment needed: Stick welder (AC or DC, 110V or 220V), electrode holder (stinger), ground clamp, welding rods (6011 for general purpose, 7018 for structural, 6013 for beginners), helmet, heavy gloves, chipping hammer, wire brush. Entry-level machines start around $200-400.

How to Choose

If you're buying one machine and need practical guidance:

• Hobbyist or DIY homeowner: Start with a MIG welder. 220V if you can swing it, 110V if that's all you have. You'll be welding usable joints within your first weekend.
• Farm, ranch, or outdoor repair: Stick welder. Portable, tough, handles rusty and dirty material in any weather. A Lincoln AC-225 or similar has been the farm standard for decades.
• Automotive, motorcycle, or artistic work: TIG. The precision and material versatility are worth the learning investment. Get an AC/DC machine so you can weld aluminum.
• Professional fabrication shop: All three, honestly. MIG for production, TIG for stainless and aluminum finish work, stick for structural and field repairs. Most shops have at least MIG and one other.

Whichever process you choose, proper settings make the difference between a clean weld and a mess. Use our MIG Welder Settings calculator to dial in voltage and wire feed speed, or the TIG Amperage Calculator to find the right starting amperage for your material and thickness.