Forney Vertex 375 Multi-Process Welder
The Forney Vertex 375 is a robust multi-process welder that delivers strong performance across MIG, Stick, and TIG applications, making it a solid investment for serious hobbyists, farm use, or light industrial fabrication.
- Rated output
- 375 A
- Duty cycle
- 60% at 250A
- Steel window
- 1.1–9.5 mm
- Mass
- 115 lbs
- 3-in-1 welding versatility
- 375-amp heavy-duty power
- Dual voltage flexibility
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Running it
The Forney Vertex 375 is a multi-process welder built for the shop owner, farm operator, or serious hobbyist who needs one machine capable of handling MIG, flux-core, stick, and TIG work without swapping equipment. Running on 230-volt input power, it delivers a wide amperage range that lets it tackle thin sheet metal one day and thicker structural steel the next, making it a genuinely versatile addition to any welding bay. Forney designed the Vertex 375 with dual voltage and amperage displays, giving welders precise, real-time feedback so they can dial in settings with confidence rather than guesswork, which shortens setup time and reduces wasted wire or rod on test passes. Under the hood, the Vertex 375 uses inverter technology, which keeps the unit relatively compact and lightweight compared to older transformer-based welders of similar output, while also improving arc stability and energy efficiency. This inverter design allows for smoother arc starts and better control over puddle behavior, whether the operator is running spray transfer MIG on thicker plate or laying down a clean TIG bead on stainless or aluminum with the optional accessories. The machine also includes synergic settings that automatically adjust parameters based on wire type and material thickness, streamlining the process for users who want professional results without spending excessive time fine-tuning every variable manually. Built with a heavy-gauge steel case and industrial-grade internal components, the Forney Vertex 375 is engineered to withstand the dust, vibration, and rough handling typical of farm shops, fabrication facilities, and mobile welding rigs. It features a spool gun connection for aluminum work, a foot pedal input for TIG applications, and thermal overload protection to prevent damage during extended, high-duty-cycle jobs. Backed by Forney's reputation for durable, no-nonsense welding equipment, the Vertex 375 gives users a single, dependable platform that consolidates several welding processes into one machine, reducing the need for multiple standalone units and making it a practical, cost-effective investment for anyone who demands flexibility on the job site.
The Forney Vertex 375 is a robust multi-process welder that delivers strong performance across MIG, Stick, and TIG applications, making it a solid investment for serious hobbyists, farm use, or light industrial fabrication. While it carries a premium price and demands a 240V circuit for full capability, the versatility and power output justify the cost for users who need one machine to handle diverse welding tasks reliably.
The full plate
As stated by the manufacturer, 5 lines.
| Max Output | 375 Amps |
|---|---|
| Input Voltage | 120V/240V Dual Voltage |
| Welding Processes | MIG, Stick, DC TIG |
| Duty Cycle | 60% at 250A |
| Weight | 115 lbs |
What holds up
- Versatile three-in-one welding capability reduces need for multiple machines
- High amperage output handles thick steel and heavy fabrication work
- Digital synergic controls make MIG welding beginner-friendly
- Solid duty cycle for a machine in this class
- Dual voltage flexibility works in shop or field settings
- Good arc stability on Stick and TIG modes
What costs you
- Heavier than single-process welders, less convenient to move around
- Higher price point compared to entry-level multi-process machines
- Learning curve for TIG mode if new to welding
- Requires 240V outlet to access full power output
- Fan runs loud during extended use
- Limited accessories included in base package, spool gun sold separately
Stated features
- MIG, Stick, and DC TIG welding in one unit
- 375-amp maximum output for heavy-duty applications
- Dual voltage input (120V/240V) capability
- Digital display for precise amperage control
- Synergic control for simplified MIG setup
- Spool gun ready for aluminum welding
- Thermal overload protection
- Portable design with built-in cart compatibility
5 people who bought it
I've been using the Vertex 375 for about six months now on farm equipment repairs and it hasn't let me down. Switching between MIG and Stick is quick and the digital display makes dialing in settings simple.
This welder handles thick steel with ease and the TIG function surprised me with how clean the welds came out. Only complaint is it's a workout to move around the garage without a cart.
Went from a basic MIG welder to this and the difference in capability is night and day. The 240V requirement means I had to run a new line, but worth it for the extra power.
I do metal art and this machine gives me the flexibility to switch processes depending on the material thickness and finish I want. Highly recommend if you need versatility.
The MIG and Stick modes were intuitive right away, but I had to watch several tutorials to get comfortable with the TIG settings. Once dialed in, it works great.
Three entries that sit next to it
Nearest standings in the ledger. Tick one to add it to the cross-reference sheet on the front page.
| 23 | Everlast PowerArc 160 Everlast · Multi-Process & Stick | 10–160 A · 60% duty | 4.3 / 5 | B | ||
| 24 | WeldPro 155 Amp Inverter Welder Weldpro · Multi-Process & Stick | 155 A · 60% duty | 4.1 / 5 | B | ||
| 20 | Everlast PowerArc 200ST Everlast · Multi-Process & Stick | 10–200 A · 60% duty | 4.3 / 5 | B |
