Welder Buying Checklist: MIG vs TIG vs Stick

Buying your first welder — or your third — comes down to one question most people skip: what are you actually going to weld? Answer that honestly and the process picks itself. Here's how the three main processes compare and what to check before you spend the money.

Start with the work, not the machine

Write down your answers: What metal? (Mild steel, stainless, aluminum?) How thick? (Sheet metal, 1/4 inch plate, pipe?) Where? (Garage with 220V, driveway with 110V, out in a field?) How often? (Weekend projects, daily fabrication?)

A 110V machine is plenty for sheet metal and light repair. If you're welding 1/4 inch and up regularly, you want 220V. No machine does everything well, so buy for the work you'll do most.

MIG: the easiest to learn

MIG (GMAW) feeds wire automatically while you guide the gun — point, pull the trigger, go. It's the fastest process to learn, handles a wide thickness range, and produces clean welds with minimal cleanup when set up right. For auto body, general fabrication, and home shop work on mild steel, MIG is the default recommendation.

Downsides: the equipment costs more than a stick setup, and solid-wire MIG needs shielding gas, which means welding indoors or out of the wind. Flux-core wire skips the gas bottle and works outdoors. Check our MIG machines and gear to see what's in stock.

Stick: the cheapest and toughest

Stick (SMAW) is the simplest machine — a power source, leads, and rods. It welds through rust, paint, and wind, works anywhere you can drag cables, and the machines cost the least. For farm repair, fences, trailers, and structural steel, stick is hard to beat.

Downsides: it's the hardest of the three to learn well, electrodes are a consumable cost per rod, and you'll chip slag after every pass. But a stick welder that works in a rainstorm has a place no MIG machine can fill. See stick equipment for machines and electrodes.

TIG: the precise one

TIG (GTAW) gives the most control — you feed filler rod by hand while managing the arc with a foot pedal or torch control. The welds are beautiful and precise, and it's the go-to for stainless, aluminum, and thin materials.

Downsides: steepest learning curve by far, slowest process, and the machines cost the most. Buy TIG when your work demands precision, not as a first machine to learn on.

The checklist before you buy

1. Duty cycle — the percentage of 10 minutes you can weld at a given amperage before the machine overheats. A 60% duty cycle at 150A means 6 minutes welding, 4 resting. Bigger is better; don't buy a 20% machine for production work.
2. Input voltage — 110V plugs in anywhere but tops out around 140A. 220V (or dual-voltage) opens up thicker material. Check what outlets you actually have.
3. Amperage range — make sure the low end goes low enough for your thinnest material and the high end covers your thickest.
4. What's included — gun, ground clamp, regulator, and drive rolls add up fast if sold separately. Compare the out-the-door setup, not just the box price.
5. Weight and portability — inverter machines are dramatically lighter than old transformer units. If the welder rides in a truck, weight matters.
6. Spool gun option — if aluminum is in your future, check whether the machine accepts a spool gun before you buy.

What to grab with it

A welder without consumables is a paperweight. Pick up the matching wire or electrodes, spare contact tips, and a decent auto-darkening helmet on the same trip — you'll want to weld the day it arrives, not after a second run to the store.

Come see the welding machines in person at Pharr or Weslaco and we'll walk through duty cycle, voltage, and setup for the work you're actually doing.

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