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907838 / Millermatic® 142 MIG Welder

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  • MIG and flux cored 120 V welder that welds from 24 gauge – 3/16 in. mild steel.


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A breakthrough control that automatically sets your welder to the proper  parameters.  Auto-Set offers all-in-one MIG minus the hassle of finding parameters.  Simply set the wire diameter, set the material thickness, and start welding!

Segmented Display

Easy to read display gives you the flexibility to set the machine precisely and accurately in Manual and Auto-Set modes.

120V Input Power

Uses 120V household input power so there is no special power requirements.  Flexible to use in any location!


This technology provides a smooth, spatter-free start.  The best starting machine in the 120V MIG category!  No more pop-gun starts or spatter to clean up.

Thermal Overload & 'Tip Saver' Short Circuit Protection

Shuts down the unit and activates the over-temperature light if the airflow is blocked or duty cycle is exceeded.  Tip Saver shuts down output when the tip is shorted to the work extending tip life and protecting internal components from damage.

Auto Spool Gun Detect™

Automatically detects when a MIG gun or spool gun is connected eliminating the need for a switch.

Generator Compatible

The Millermatic 142 will be able to operate and provide full output when powered by generators with 5,000-watt (5.0K) output or higher, such as a Miller Blue Star 185 (6200 watts) or Fusion 185 (6200 watts) generator. Limited output will occur when used with smaller generators.

Quick Select™ Drive Roll

Makes setup quicker by offering three grooves - two for different size solid wire and a third for flux-cored wire.


  • Flux Cored (FCAW)
  • MIG (GMAW)


Title Millermatic® 142 MIG Welder
Industries Interests Racing
Farm and Ranch
Welding Education and Training
Amperage 30 A - 140 A
Material Thickness Aluminum 18 ga. (1.2 mm) - 14 ga. (1.9 mm)
Mild Steel 24 ga. (0.8 mm) - 3/16 in. (4.8 mm)
Weldable Metals Aluminum
Stainless Steel
Input Voltage 110/115/120 V
Input Phase 1-Phase
Input Hz 60 Hz
Current Type DC
Rated Output 100 A at 19 V, 60% duty cycle 80 A at 18 V, 100% duty cycle
Max Open Circuit Voltage 57 VDC
Wire Feed Speed 1.5 m/min - 15.2 m/min
60 IPM - 600 IPM
Wire Diameter Stainless 0.024 in. - 0.03 in.
Stainless 0.6 mm. - 0.8 mm.
Solid Steel 0.6 mm. - 0.8 mm.
Solid Steel 0.024 in. - 0.03 in.
Flux Cored 0.03 in. - 0.035 in.
Flux Cored 0.8 mm. - 0.9 mm.
Spool Size 8 in.
Portability Handle(s)
Running Gear / Cart (Optional)
Weld Output CV
Applications Car Restoration
Metal Art
Welding Projects
Warranty 3 Years
Miller's True Blue Warranty
  • Millermatic 142.
  • 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.