Millermatic® 212 Auto-Set™ MIG Welder

Millermatic® 212 Auto-Set™ MIG Welder

All-in-one wire welder that welds material from 22 gauge to 3/8 in. thick in a single pass.

Machine Only

Aluminum Package

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What's Included

  • Millermatic® 212 Auto-Set™
  • 15 ft. (4.5 m) 250-amp MDX™-250 MIG gun w/ Bernard® AccuLock™ MDX consumables for .030/.035 in. (0.8/0.9 mm) wire
  • 10 ft (3 m) work cable with clamp
  • 7 ft (2.1 m) power cord and plug
  • Argon mix regulator/flow gauge and hose
  • Factory-installed running gear with EZ-Change™ Low Single Cylinder Rack
  • .030/.035 in reversible drive rolls
  • Extra contact tips
  • Material thickness gauge #229895
A breakthrough control that automatically sets your welder to the proper parameters. Auto-Set makes set up very simple and gives you precise settings instantly.   Learn More
Compatible with Spoolmate 200 Series Spool Gun!
The Spoolmate 200 saves time for the operator by eliminating the need to go back to the machine to change wirefeed speed.
Manual Mode
Gives you the flexibility to manually set the machine when welding aluminum, stainless steel or anytime you want to set your own parameters on mild steel.
Line Voltage Compensation
Keeps welding output constant even if power input varies by +/- 10%.
Standard Built-In Solid-State Contactor Circuit
Makes wire electrically "cold" until trigger is pulled. This makes unit safer and torch easier to position before starting to weld.
Reduce Maintenance and Operating Costs
Our Fan-On-Demand™ cooling system only operates when needed, reducing power consumption and contaminants drawn into the machine.
EZ-Change™ Low Cylinder Rack
Allows users to easily roll cylinders on and off of rack - no need to lift cylinders.
Larger Work Area
Now with longer 15-ft M-25 MIG gun!

Not Included

  • Shielding gas (for welding with solid wire [GMAW])
  • Welding wire
  • Flux cored drive rolls (for welding with flux cored wire [FCAW])
  • Spool Gun (for welding aluminum)
  • Personal safety products (helmet, gloves)
  • Your local welding distributor can provide shielding gas, additional welding wire and a full product offering.



Flux Cored (FCAW)

General Specifications

Title Millermatic® 212 Auto-Set™ MIG Welder
Industries Interests Racing / Customizing / Restoring
DIY / Home Hobbyist
Farm and Ranch
Metal Art / Sculptures
Boat / Yacht
Material Thickness Mild Steel 22 ga. (0.9 mm) - 3/8 in. (9.5 mm)
Aluminum 14 ga. (1.9 mm) - 3/8 in (9.5 mm)
Weldable Metals Stainless Steel
Input Voltage 208 V
220/230/240 V
Input Phase 1-Phase
Input Hz 60 Hz
Input Amperage 28 A
Current Type DC
Rated Output 160 Amps at 24.5 VDC, 60% duty cycle
Max Open Circuit Voltage 34 VDC
Amperage Range 30 A - 210 A
Wire Feed Speed 1.3 m/min - 17.8 m/min
50 IPM - 700 IPM
Wire Diameter Solid Steel 0.023 in 0.035 in
Solid Steel 0.6 mm 0.9 mm
Stainless 0.023 in 0.035 in
Stainless 0.6 mm 0.9 mm
Flux Cored 0.03 in 0.045 in
Flux Cored 0.8 mm 1.2 mm
Portability Running Gear / Cart (Standard)
Weld Output CV
Net Width 19 in
Net Height 30 in
Net Length 40 in
Net Weight 183 lbs
Warranty 3 Years
Miller's True Blue Warranty



Welding with the Multimatic 215 multiprocess welder


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