The Lincoln Electric Power MIG 180 Dual K3018-2 is a dual-voltage MIG welder built for anyone who needs one machine that works everywhere, from a 120V home garage outlet to a 208/230V shop circuit. Delivering up to 180A of output on 230V input, with 30-180A of usable range and a 130A/20V/30% duty cycle, this welder handles everything from thin 24 gauge sheet metal up to half inch steel with self shielded flux cored wire. The no tools required voltage switch means you can move between a 120V generator on a job site and a 230V panel in the shop without swapping parts or rewiring anything, making it the practical choice for home shop owners, auto body technicians, and small fabrication operations who cannot afford downtime waiting on the right outlet. Lincoln's Diamond Core Technology powers the arc performance here, producing a forgiving, low spatter weld with a wide voltage sweet spot on steel, stainless steel, and aluminum, while the industrial cast aluminum drive system and brass to brass gun connection keep wire feed consistent even in high volume use. The unit ships spool gun ready, so aluminum projects are a simple upgrade away with the optional Magnum PRO 100SG spool gun, extending this welder's reach well past typical entry level MIG machines in its class. Whether the job is farm equipment repair, light frame collision work, or small batch fabrication, the Power MIG 180 Dual gives buyers dual-voltage flexibility without stepping up to a heavier, less portable machine. WeldingMart is an authorized Lincoln Electric dealer, so every Power MIG 180 Dual K3018-2 purchased here carries full manufacturer warranty coverage and genuine factory support, with no gray market risk. Orders over $49 ship free, and the K3018-2 is in stock and ready to leave the warehouse fast, backed by WeldingMart's knowledgeable welding equipment specialists who can help buyers choose the right consumables, gas setup, and accessories before checkout. For shops and home welders who want proven Lincoln Electric reliability in a portable, dual-voltage package, the Power MIG 180 Dual K3018-2 remains one of the most versatile 180A MIG welders on the market today.
The Lincoln Power MIG 180 Dual (K3018-2) is Lincoln Electric's dual-voltage wire welder — the only 180-amp Lincoln MIG that plugs into both 120V household outlets and 208/230V shop circuits without rewiring. Running 120V, it delivers 30–140A for sheet metal, light fabrication, and auto body work. Switch to 208/230V and the output opens up to 180A, handling material through 3/16 in. with solid MIG wire or up to 1/2 in. with flux-cored wire. The K3018-2 also features spool gun ready output — accept the Magnum PRO 100SG for aluminum MIG without adapters — and Lincoln's Diamond Core Technology for a smooth, low-spatter arc across both voltage levels. Free shipping on every order from WeldingMart, an authorized Lincoln Electric dealer since 2003.
| Model | Lincoln Power MIG 180 Dual |
|---|---|
| SKU / Manufacturer Code | K3018-2 |
| Output Amperage Range | 120V: 30–140 A | 208/230V: 30–180 A |
| Duty Cycle | 30% @ 130A (120V) | 30% @ 130A (230V) |
| Input Voltage | 120V / 208V / 230V (dual voltage — no rewiring) |
| Phase | Single-Phase |
| Wire Diameter Range | 0.025–0.035 in. solid wire; 0.030–0.035 in. flux-cored |
| Wire Feed Speed | Contact us for WFS range |
| Welding Processes | MIG (GMAW), Flux-Cored (FCAW), Aluminum (with spool gun) |
| Weight | 64 lbs (29.0 kg) |
| Dimensions (H × W × D) | 14 × 10.2 × 18.6 in. (357 × 258 × 472 mm) |
| Warranty | 3-Year Lincoln Electric Manufacturer Warranty |
The Lincoln Power MIG 180 Dual K3018-2 is the right machine if you need one welder that works at home and in the shop. Home-shop hobbyists and automotive restorers who only have a 120V garage circuit get a capable MIG without running new wiring. Fabricators who move between a garage and a dedicated 230V bay never need a second machine. Farm and ranch operators value the plug-and-go dual voltage on equipment with inconsistent power availability. If your shop runs exclusively on single 230V and you want spool gun aluminum capability on a dedicated circuit, compare the Power MIG 180C (single 230V, spool gun ready).
- True dual voltage — 120V and 208/230V: A single switch selects input voltage. No tool, no rewiring, no separate power supply needed — plug into a 120V outlet at home or a 230V outlet at the shop.
- Spool gun ready for aluminum MIG: The K3018-2 is wired for the Magnum PRO 100SG spool gun. Disconnect the MIG gun, plug in the spool gun, and weld aluminum without a push-pull system or adapter kit.
- Diamond Core Technology: Lincoln's arc-control system delivers consistent starts, low spatter, and a forgiving arc across the full amperage range — on both voltage settings.
- Tool-less polarity change: Switch from solid MIG wire (DCEP) to gasless flux-cored wire (DCEN) in seconds with the quick-release polarity connector inside the wire compartment.
- Cold wire feed and spot timer: Built-in cold wire feed for precise positioning before striking an arc, plus a spot/stitch timer for controlled tack welds on thin sheet metal.
- Industrial-grade wire drive: Cast-aluminum, four-roll drive with dual-knob tension control feeds .025–.035 in. wire consistently without birdnesting.
- Lincoln Electric 3-Year warranty: Full manufacturer warranty covers the power source for 3 years through Lincoln Electric's North American service network.
- Lincoln Power MIG 180 Dual MIG welder (K3018-2)
- Magnum PRO 100L 10-foot MIG gun and cable assembly
- Work clamp and work cable
- Gas hose, regulator, and flowmeter
- 0.025 in. and 0.035 in. drive rolls
- Copper Plus contact tips
- Operator's manual
- Browse all MIG welders — compare the full Lincoln Power MIG lineup side by side
- ER70S-6 MIG wire — recommended solid wire for the Power MIG 180 Dual on steel
- Power MIG 180C (single voltage, 230V only) — the spool gun ready single-voltage 180-amp alternative
- Welding accessories — contact tips, nozzles, drive rolls, and liners for the Magnum PRO gun
The Power MIG 180 Dual K3018-2 runs on both 120V and 208/230V — you choose the voltage with a switch. The Power MIG 180C K2473-2 operates only on 208/230V single voltage and is heavier (80 lbs vs 64 lbs), reflecting a more robust internal transformer. The 180C is a dedicated shop machine; the 180 Dual is a portable dual-voltage machine. Both are spool gun ready for aluminum. If you have a 120V garage circuit and sometimes use 230V, buy the 180 Dual K3018-2.
Yes. The K3018-2 is spool gun ready — connect the compatible Magnum PRO 100SG spool gun (sold separately), select the appropriate drive roll and contact tip, and weld aluminum alloys with ER4043 or ER5356 wire. No push-pull kit required.
Both. The Lincoln Power MIG 180 Dual accepts 120V (standard household outlet) and 208/230V (standard shop outlet) input. A selector switch on the rear panel sets the voltage. At 120V, output is limited to 30–140A. At 208/230V, output extends to 30–180A. No rewiring required between voltage selections.
The machine feeds 0.025 in. and 0.035 in. solid MIG wire, and 0.030–0.035 in. flux-cored wire. Drive rolls for both sizes are included. Use 0.025 in. ER70S-6 for light sheet metal work at 120V; use 0.030–0.035 in. on thicker stock at 230V.
WeldingMart is an authorized Lincoln Electric dealer shipping the Power MIG 180 Dual K3018-2 with free freight from our Wisconsin warehouse. Every unit is new, factory-sealed, and backed by Lincoln Electric's full 3-year manufacturer warranty. Our certified welding specialists can help you select the right wire, gas mixture, and spool gun configuration before you buy — call or chat. Order today and get the only 180-amp Lincoln MIG welder that works on both 120V and 230V.