Forney® 140 MPx

The Forney® 140 MPx is a 120V TruSet™ multi-process welder that lets you handle MIG, flux core, stick, and DC TIG with one compact inverter machine. TruSet™ presets, a bright passive LCD display, and a simple two-knob interface help you dial in usable settings fast, while up to 140 amps of output lets you weld 24 ga through 1/4 in mild steel in a single pass. Backed by a 3-year warranty and Forney® Industries’ 90+ years of welding experience, this TruSet multi-process welder is built for DIYers, fabricators, and mobile repair crews who want MIG, flux core, stick, and DC TIG flexibility from a single 120V machine.

Key features & benefits:

• TruSet™ multi-process presets deliver fast setup with tuned voltage, amperage, and wire feed combinations so you can get a stable arc quickly instead of guessing at settings for each process.
• Expert tech and American support delivers confidence so you can call Forney’s U.S.-based service team for help with setup, troubleshooting, and parts whenever you need it.
• 3-year warranty delivers long-term assurance so you can count on the machine for ongoing projects, maintenance, and repair work.
• Bright passive LCD display with large readout delivers a next-generation panel that is easy to read in dim garages or bright daylight so you can see your TruSet™ values at a glance.
• 140 amp max output with 30% duty cycles delivers enough power and arc time so you can weld 24 ga through 1/4 in mild steel in a single pass for MIG and flux core, and run stick up to 1/8 in on typical repair jobs.
• True multi-process machine (MIG, flux core, stick, DC TIG) delivers four welding processes in one package so you can jump from MIG or flux core fabrication to stick repair or DC TIG detail work without buying separate welders.
• 120V input power delivers plug-and-play operation so you can weld anywhere you have a standard household outlet or compatible generator.
• Generator-capable (4,000 W minimum) delivers flexibility so you can weld in the field or on remote jobs with a properly sized 4,000 W generator with no low-idle and 5% THD max.
• CSA certified performance delivers proven safety and output so you can weld with peace of mind in the shop, garage, or outdoors. Our products are CSA certified to meet strict safety and performance standards ensuring reliability and your safety in any work environment.
• Compact, lightweight inverter with handle and carry strap delivers portable performance so you can bring the welder, leads, and torch to the work instead of moving material.
• Runs solid wire and flux core wire delivers flexibility so you can MIG weld with gas for clean beads in the shop, then switch to gasless flux core outdoors when wind or portability matters.
• Two-knob interface delivers simple control so you can adjust voltage and wire feed or amperage quickly and repeat settings across different jobs.
• 4 in and 8 in spool capability with metal wire drive delivers the capacity and durability you need for small projects or longer production runs.
• Euro-connect 10 ft MIG torch and Tweco®-style consumables deliver easy torch removal, storage, and change-over plus access to industry-standard tips, diffusers, and nozzles so you can keep welding with widely available parts.

Technical Specifications:

• Input voltage: 120 VAC, 50–60 Hz, single phase
• Input current: 14.3 A
• Max duty cycle: Stick 30% at 80 A; TIG 20% at 110 A; MIG 30% at 90 A
• Wire feed speed range: 80–200 inches per minute
• Output voltage range (CV MIG): 13–20 V
• Output current range (CC processes): Stick 10–80 A; TIG 10–110 A
• Full output range: 10–140 A class, process-dependent
• Processes: MIG (GMAW), flux cored (FCAW), stick (SMAW), DC TIG (GTAW), TruSet™ MIG, TruSet™ flux core
• Wire diameter range: 0.024–0.035 in solid or flux core wire
• Single-pass plate thickness range: 24 ga–1/4 in mild steel on 120V
• Electrode diameter range (stick): 3/32–1/8 in on 120V
• Power supply type: Inverter DC
• Generator requirements: 4,000 W continuous output, no low-idle, 5% THD max
• Input power cable length: 7 ft
• MIG torch: 10 ft Euro-connect torch, removable
• Ground cable length: 8 ft copper ground clamp and lead, removable
• Electrode holder lead: 8 ft copper stick lead, removable
• Spool size compatibility: 4 in and 8 in spools
• Wire drive construction: Metal
• Spool gun capable: No
• Foot pedal capable: No
• Gas connection: 5/8–18 RH thread (for MIG only)
• IP rating: IP21S
• Certification: CSA listed
• Warranty: 3 years (machine)

In real-world use, the Forney® 140 MPx plugs into a standard 120V outlet but still delivers up to 140 amps of output, allowing you to weld common mild steel from thin 24 ga sheet to 1/4 in plate in a single pass. The 30% duty cycles at typical working amps give you several minutes of arc-on time every 10 minutes, matching how most DIY and light fabrication jobs are actually welded. TruSet™ process presets and the bright LCD simplify setup, especially when switching between MIG, flux core, stick, and DC TIG, while the Euro-connect torch and removable leads keep storage and change-over easy. Combined with 4 in/8 in spool support and generator capability, the 140 MPx is a strong multi-process welder for home, shop, and mobile repair work.

Ideal for:

• Home and garage fabrication on brackets, racks, frames, and small structural projects up to 1/4 in steel.
• Farm and ranch repairs on gates, implements, and equipment where MIG, flux core, or stick may all be needed depending on conditions.
• Mobile repair, light industrial maintenance, and jobsite work using a 120V circuit or compatible generator.
• DIYers and students who want one TruSet™ machine to learn MIG, flux core, stick, and DC TIG without buying a separate welder for each process.

What’s included:

• Forney® 140 MPx multiprocess welder with 7 ft power cord
• 8 ft ground clamp and lead
• 10 ft Euro connect MIG gun
• 8 ft stick electrode holder and lead
• Gas regulator and 6 ft hose
• 15 to 20 amp plug adapter
• Quick Start Guide (English, Spanish, French)
• Hang tag
• Nylon carry strap
• Expert Tech magnet
• 0.030 in contact tip
• 0.035 in contact tip
• 0.030–0.035 V / 0.030–0.035 K drive roll (installed)

Recommended accessories:

• Liner – ITEM# 101202, MIG gun liner for 0.023–0.035 in wire, sized for Euro-connect guns to help maintain smooth wire feed and reduce burnback.
• Diffuser – ITEM# 85793, Tweco®-style diffuser for stable gas flow and consistent arc performance with compatible MIG guns.
• Contact tip – ITEM# 60170, Tweco®-style 0.024 in copper MIG contact tip, precision-machined for smooth wire feeding and consistent starts.
• Contact tip – ITEM# 60171, Tweco®-style 0.030 in copper MIG contact tip, compatible with Forney® Easy Weld® and other Tweco-style MIG guns.
• Contact tip – ITEM# 60172, Tweco®-style 0.035 in copper MIG contact tip, 4-pack, designed for reliable contact and clean, stable arcs.
• Contact tip – ITEM# 60173, Tweco®-style copper contact tip for light to medium duty MIG welding where a standard 1 in tip is required.
• Nozzle – ITEM# 85336, Tweco®-style nozzle (21-50), 1/2 in bore copper nozzle for general MIG and flux core welding applications.
• Nozzle – ITEM# 85337, Tweco®-style nozzle variant designed for consistent shielding and heat resistance in everyday welding.

Forney® and TruSet™ are trademarks of Forney® Industries®, Inc. and may be registered in the United States and/or other countries.

Forney® Industries green color is a federally registered trademark and cannot be reproduced unless authorized by Forney® Industries.

3 Year

• Forney Inverter Based Machines: All internal electrical components that cannot be accessed without removing the cover.

For more warranty information, visit:Forney Industries Warranty Information