MIG vs TIG vs Stick: Which Welding Process to Learn and Use
MIG, TIG, and stick welding compared — shielding, thickness range, position and outdoor suitability, deposition, skill floor, and equipment cost.
Updated August 20, 2026
All three arc processes melt base metal with an electric arc and protect the puddle from air — the differences are in who feeds the filler and what does the protecting. MIG feeds a consumable wire continuously and shields with bottled gas; TIG holds an arc from a non-consumable tungsten under inert argon while filler is dipped in by hand; stick burns a flux-coated rod whose coating generates its own shielding as it goes.
That shielding difference is the practical fork in the road. Bottle-shielded arcs (MIG and TIG) weld beautifully indoors and fail quietly in wind, where the gas envelope blows away and leaves porosity. Flux-shielded stick carries its protection in the rod, which is why field, farm, and repair welding outdoors has belonged to it for a century.
The trade runs skill against speed against surface. MIG is the easiest to make acceptable welds with and the fastest of the three in the shop; TIG is the slowest and most demanding but yields the cleanest, most controlled weld on the widest range of metals; stick tolerates dirt, wind, and cheap equipment. The use cases below pick per situation — nobody should pick a lifetime process off one table.
Side by Side
| Spec | MIG (GMAW) | TIG (GTAW) | Stick (SMAW) |
|---|---|---|---|
| AWS process designation & shielding | GMAW — continuous wire electrode, externally supplied shielding gas (CO₂ or argon mixes) | GTAW — non-consumable tungsten electrode, inert gas (argon) shielding, filler added separately | SMAW — flux-coated consumable electrode; the burning coating creates the shielding gas and slag |
| Typical material thickness range | Thin sheet through medium plate; short-circuit transfer handles automotive-gauge sheet, spray transfer wants thicker sections | The thin-and-precise end — foil-gauge to moderate thickness; heavy sections are possible but painfully slow | From roughly structural sheet up through heavy plate; very thin material is easy to blow through with a rod |
| Outdoor & wind suitability | Poor — the gas envelope blows away in modest wind, leaving porosity; needs shelter or a switch to self-shielded flux-core wire | Worst — the same gas dependence plus a delicate puddle; TIG is a shop process | Best — shielding is generated at the arc from the flux, so wind, rain-adjacent misery, and remote sites are its home turf |
| Position capability | All-position in short-circuit mode; high-deposition spray transfer is restricted to flat and horizontal | All-position, with total heat control via the foot pedal — position is a skill problem, not a process one | All-position with the appropriate electrode classification; vertical and overhead rods are a stock item |
| Deposition & speed class | Fastest of the three for continuous work — the wire never stops and there is no slag to chip | Slowest deposition of the common arc processes; every pass is deliberate | Middling arc-on rate, but real duty cycle is lower: every rod ends in a stub change and every pass in slag chipping |
| Materials handled well | Carbon and stainless steel readily; aluminum with a spool gun and argon, workably | The specialist: carbon, stainless, aluminum (with AC), titanium, magnesium — anything, and with the best metallurgical control | Carbon steel above all, stainless and cast-iron repair with specialty rods; aluminum stick exists but is a last resort |
| Skill floor & learning curve | Lowest floor — the machine feeds the wire and the arc is forgiving; first acceptable welds come in an afternoon | Highest — two hands and a foot doing different things at once; months to competence, years to pretty | Middle — striking and holding an arc on a melting rod takes practice, but the technique is simple and self-contained |
| Equipment cost drivers | Machine plus wire feeder, regulator, and a rented/owned gas bottle — the bottle logistics are the hidden line item | Highest for capability: an AC/DC TIG machine with high-frequency start, torch, pedal, argon, and tungstens | Cheapest entry in welding — a basic machine, leads, and a box of rods; no gas, no feeder, no pedal |
Which One for the Job
Hobbyist auto-body and thin sheet steel
MIG (GMAW)
Short-circuit MIG was practically made for automotive-gauge sheet: low heat input, easy tack-and-stitch technique to control warping, and a skill floor low enough that weekend hours go into the car rather than into rod technique. Stick blows holes in thin sheet, and TIG does the job beautifully at five times the patience.
Farm and field repair on dirty, rusty steel
Stick (SMAW)
Stick carries its shielding in the rod, shrugs at wind, runs off a cheap machine or an engine drive at the end of long leads, and appropriate electrodes tolerate mill scale, rust, and paint that would leave a gas-shielded arc full of porosity. This is the process that fixes gates, implements, and trailers where they broke.
Stainless or aluminum showpiece work
TIG (GTAW)
When the weld is the visible feature — polished stainless, aluminum fabrication, thin-wall tube — TIG’s separate control of heat and filler produces the stacked, contamination-free beads nothing else matches, and AC TIG is the standard answer for aluminum. The cost is time and a long apprenticeship of hand skills.
First machine for a general home shop
MIG (GMAW)
For brackets, carts, fences, and the general fix-it stream, MIG covers the most jobs per dollar of frustration: fast, clean, and forgiving indoors, with self-shielded flux-core wire as the escape hatch for a windy driveway. Add stick later for heavy or outdoor work, and TIG only when a project genuinely demands it.
Frequently Asked Questions
Which welding process should a beginner learn first?
MIG, for the fastest path from sparks to sound welds — the machine feeds the wire, so a beginner can concentrate on travel speed and gun angle, and Lincoln-class training materials consistently rank it the lowest-skill-floor arc process. Stick is the better first process only if the work is outdoors or the budget is minimal. Starting on TIG teaches the deepest fundamentals but delays useful output by months.
Can MIG welding be done outside in the wind?
Not reliably with gas shielding: even a modest breeze strips the CO₂/argon envelope off the puddle and the bead comes up porous. The field fixes are a windbreak, or switching the same wire-feed machine to self-shielded flux-cored wire, which generates shielding from the wire’s core the way stick does from its coating. For routinely outdoor work, stick or self-shielded flux-core is the honest choice.
Why is TIG so much slower than MIG if both are gas-shielded?
Because TIG separates every function MIG automates: the tungsten only makes the arc, filler is dipped in by hand a fraction of an inch at a time, and heat is ridden on a foot pedal. That separation is exactly what buys TIG its control and appearance, and exactly why it has the lowest deposition rate of the common arc processes. MIG’s continuously fed wire is both electrode and filler, so metal goes in as fast as the wire feeds.
Do the three processes need different welding machines?
Largely yes. MIG needs a constant-voltage source with a wire feeder; stick and TIG run on constant-current sources, which is why stick machines can often DC-TIG with a valve torch added, while proper aluminum TIG needs AC and high-frequency start on top. Modern multiprocess inverters bundle all three respectably, at the cost of being merely good rather than excellent at each.
Try the Calculators
Sources
- AWS A3.0 — Standard Welding Terms and Definitions (GMAW / GTAW / SMAW process designations)
- AWS Welding Handbook, process chapters — process capabilities, transfer modes, position limits
- Lincoln Electric published process guidance (welding resource center / Procedure Handbook of Arc Welding) — shielding behavior in wind, deposition ranking, skill-floor comparison