Welders

MIG, TIG and stick welders from Miller, including multi-process machines that do all three, for trailers, gates, frames, bumpers and repairs. Tell us what you weld and what power you have, and we'll help you pick one you won't outgrow.

MIG WelderMulti-Process Welder
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  • Miller Multimatic 220 AC/DC Multi-Process Welder

    Miller Multimatic 220 AC/DC Multi-Process Welder

    Miller Multimatic 220 AC/DC Multi-Process Welder

    120/240V MIG, stick and AC/DC TIG in one 56 lb machine.

    $4,285.00
  • Miller Millermatic 211 PRO MIG Welder

    Miller Millermatic 211 PRO MIG Welder

    Miller Millermatic 211 PRO MIG Welder

    120/240V MIG and flux-core welder, 30–230 A, up to 3/8 in. steel on 240V.

    $1,699.00

Picking a welder for a small shop

Most welder questions come down to three things: what you're welding, how thick it is, and what power you have in the shop. Start there and the list gets short fast.

MIG, TIG, stick or multi-process

MIG is the workhorse for steel fab: trailers, brackets, gates, frames. It's the fastest to learn and the fastest on the clock. With flux-core wire it works outside in a breeze without a gas bottle.

TIG is slower and takes more practice, but it's the process for thin material, stainless, and aluminum (with an AC machine). If you want clean welds on tube and sheet, this is it.

Stick handles dirty, rusty and outdoor steel and thick repair work, and the machines are simple. It's the least forgiving on thin material.

Multi-process machines do MIG, stick and TIG from one box. You give up some duty cycle and convenience against dedicated machines, but for a one-welder shop that does a bit of everything, it's often the right call.

120V vs 240V

A dual-voltage machine lets you start on a regular outlet and move to a 240V welder circuit later. On 120V, most MIG machines top out around 3/16 in. steel in one pass. On 240V the same machine typically reaches 3/8 in. If you can run a 240V circuit to the shop, you'll get far more out of almost any welder. Each listing shows the plug, the input amps and what the machine does on each voltage.

Duty cycle, in plain terms

Duty cycle is how many minutes out of ten a machine can weld at a given amperage before it needs to cool. A 60% rating at 160 A means six minutes of welding, four minutes of rest. Small-shop work rarely runs a machine at its limit for long, but if you do long passes on thick material, compare duty cycle at the amperage you'll actually use, not the top number.

What you'll need besides the welder

Plan for a gas cylinder (C25 for steel MIG, straight argon for TIG and aluminum), wire or rod, a helmet, gloves and a jacket, and a cart if the machine doesn't come with one. Each listing has a "What else you'll need" box so the total cost isn't a surprise.

Questions about Welders

Can I run a MIG welder on a regular household outlet?
Many dual-voltage MIG welders run on a standard 120V outlet, ideally on a dedicated 20 A circuit, but output is limited. Expect up to about 3/16 in. steel on 120V and up to about 3/8 in. on 240V. Each listing shows both.
Do I need gas for MIG welding?
Solid wire needs shielding gas, usually C25 (75% argon, 25% CO2) for steel. Flux-cored wire makes its own shielding and runs without gas, which works better outdoors but leaves more spatter and slag.
Which welder is best for aluminum?
An AC TIG welder gives you the most control on aluminum. A MIG welder can do aluminum with a spool gun and straight argon. Either way, plan on a separate argon cylinder.
What does duty cycle mean?
It's the number of minutes out of ten a welder can run at a stated amperage before it needs to cool. 60% at 160 A means 6 minutes of welding and 4 minutes of cooling at 160 A.
What size breaker do I need for a 240V welder?
It depends on the machine's input amps. Many 200-amp-class inverter welders run on a 240V 30 to 50 A circuit with a NEMA 6-50 receptacle. Check the input amps listed on the product page and have an electrician size the circuit.