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Miller Millermatic 142 120V MIG Welder with Auto-Set

$1,874.49/ea $1,646.00/1 of each only $1,646.00/eaSave 12%

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OVERVIEW

Meet the New Standard in 120V MIG Welding

Say hello to the Miller Millermatic 142, the powerful successor to the beloved Millermatic 141. If you are looking for a professional-grade MIG welder that runs on standard household power, this is the machine for you. Miller has packed this lightweight, 33-pound unit with features that make welding easier, faster, and cleaner, whether you are a seasoned pro or just striking your first arc. It plugs right into any standard 120-volt outlet, giving you the freedom to weld in your garage, shop, or driveway without special wiring.

Effortless Setup with Auto-Set™

Stop guessing your settings and start welding immediately. The Millermatic 142 features Miller's breakthrough Auto-Set™ technology. Simply select your wire diameter and the thickness of the metal you are welding, and the machine automatically dials in the perfect voltage and wire feed speed. It’s like having a master welder inside the machine setting it up for you. Prefer manual control? No problem. The infinite voltage control and clear segmented display allow you to fine-tune the arc exactly to your liking for that perfect bead profile.

Smooth Performance & Reliability

One of the biggest frustrations with small welders is the "pop-gun" start that leaves a mess of spatter. The Millermatic 142 solves this with Smooth-Start™ technology, delivering a spatter-free start every time. The angled cast-aluminum drive system ensures your wire feeds smoothly without tangling, and the Quick Select™ drive roll makes switching between solid and flux-cored wires a breeze—no tools required. Plus, with Thermal Overload protection and Tip Saver technology, your machine protects itself from overheating and short circuits, ensuring it lasts for years to come.

Versatility for Every Project

From auto body repair and metal art to farm projects and general maintenance, this welder handles it all. It welds mild steel up to 3/16-inch thick in a single pass. Need to weld aluminum? Just plug in an optional Spoolmate spool gun, and the Auto Spool Gun Detect™ will instantly recognize it, getting you ready to weld aluminum without flipping a single switch. Generator compatibility means you can even take it on the road for remote repairs. The Millermatic 142 isn't just a welder; it's your go-to partner for fabrication.

Additional Information
Brand:Miller
Amperage:140
Voltage:120 V
Weld Process:MIG (GMAW)
Duty Cycle:60%
Weight:33 lb
Phase:Single Phase
Process Type:MIG (GMAW), Flux Cored (FCAW)
Input Voltage:120V
Amperage Range:30-140 A
Wire Feed Speed Range:60 - 600 IPM
Weld Capacity:24 ga. - 3/16 in. Mild Steel, 18 ga. - 14 ga. Aluminum
Included Accessories:MDX-100 MIG Gun, Work Cable with Clamp, Power Cord, Regulator and Hose, Solid Wire Spool, Contact Tips, Drive Rolls, Thickness Gauge
Portability:Portable Handle, 33 lbs
Warranty Period:3 Years
Packaging Description:1 of each

INCLUDED

  • Millermatic 142 Power Source
  • 10-ft. (3 m) MDX-100 MIG Welding Gun
  • 10-ft. (3 m) work cable with clamp
  • 6.5-ft. (2 m) power cord with plug
  • Argon and AR/CO2 mix flow gauge regulator with gas hose
  • Hobart spool of .030-in. (0.8 mm) solid wire
  • Two contact tips for .030-in. (0.8 mm) wire
  • Quick Select drive rolls for .024-in (0.6 mm) or .030/.035-in. (0.8/0.9 mm) solid wire, and .030/.035-in. (0.8/0.9 mm) flux-cored wire
  • Material thickness gauge (#229 895)
  • Hook-and-loop cord wraps

APPLICATIONS

  • Light Fabrication
  • Maintenance and Repair (MRO)
  • Auto Body Repair
  • Farm and Ranch
  • Metal Art and Hobby Projects
  • Home DIY

FAQ

The Millermatic 142 runs on standard 120-volt household input power, requiring no special electrical modifications for typical home use.

Yes, the Millermatic 142 is the direct successor to the popular Millermatic 141, offering improved performance and features in a lighter package.

Yes, you can weld aluminum by connecting an optional Spoolmate 100 or Spoolmate 150 spool gun. The machine features Auto Spool Gun Detect to simplify setup.

The rated duty cycle is 60% at 100 Amps and 19 Volts, or 100% at 80 Amps and 18 Volts.

Yes, the Millermatic 142 can operate at full output when powered by generators with a continuous output of 5,000 watts (5.0K) or higher.

It can weld up to 3/16-inch (4.8 mm) mild steel in a single pass and up to 14-gauge aluminum with a spool gun.

Auto-Set is a control feature that automatically sets the welder to the proper parameters based on the user-selected wire diameter and material thickness.

The package includes the power source, 10ft MDX-100 MIG gun, 10ft work cable, power cord, regulator/hose, solid wire spool, contact tips, drive rolls, and a thickness gauge.

CATALOGUE & SPEC SHEETS

Spec Sheet
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