MIG / gas · Forney

Forney 311 MIG Welder

MIG / gas

Updated October 2026

Quick verdict

Built for clean steel welds indoors.

Strength
MIG / gas.
Trade-off
Duty cycle not stated with amps.
Right buyer
Clean steel welds indoors.
Output range
210-Amp
Max steel (maker)
Welds up to 3/8 inch
Spool gun
Spool gun
Size
210-Amp
Material
Metal
Dimensions (seller)
20.25 x 10.25 x 16 inches
Prices change often; the button shows today's price.

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What it welds

The Forney 311 MIG Welder is a MIG / gas; its listing doesn't state an output range, so check the rating plate.

The maker's thickness claim reads "Welds up to 3/8 inch".

The listing doesn't give a duty cycle with its amperage, which makes long beads hard to plan; the rating plate or manual should state it. Why it matters.

It runs solid wire under shielding gas for the cleanest wire-feed welds; most machines like it also run flux-core wire outdoors.

Use a lens of at least OSHA's minimum shade for the current: shade 10 or darker for typical MIG work here. Shade chart.

Also on the listing: dimensions of 20.25 x 10.25 x 16 inches and a weight of 84 lb.

Warranty, per the listing: 5/3/1 warranty against manufacturer defects.

Is it the right machine for the job?

Buy it for

  • Clean steel welds indoors

Skip it for

    What it does well, where it falls short

    Does well

    • MIG / gas

    Falls short

    • Duty cycle not stated with amps
    • Output range not stated

    Power and setup notes

    • Ratings are the maker's own, stated under the maker's conditions. Follow the manual, wear eye protection of at least OSHA's minimum shade, keep combustibles away, ventilate, and have a licensed electrician install new circuits.

    Rated output and specs

    Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

    Model number311Retailer
    Product weight84 lbRetailer
    Dimensions (seller)20.25 x 10.25 x 16 inchesRetailer
    Size210-AmpRetailer
    MaterialMetalRetailer
    PowerCorded-ElectricRetailer
    Warranty5/3/1 warranty against manufacturer defectsRetailer
    Output range210-AmpRetailer
    Max steel (maker)Welds up to 3/8 inchRetailer
    Spool gunSpool gunRetailer

    Machines to put next to it

    Other mig and flux-core welders in the same amp range

    Every mig and flux-core welders on one spec sheet · All Forney machines listed

    Final verdict

    Built for clean steel welds indoors.

    Where to buy

    Our links open this exact model's product page. Prices and stock change; check what's included before you order.

    Prices change often; the button shows today's price.

    Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

    Questions buyers ask

    How thick can the Forney 311 MIG Welder weld?
    The maker states "Welds up to 3/8 inch". The listing doesn't state an output range.
    What is the Forney 311 MIG Welder's duty cycle?
    The listing doesn't state it with an amperage; check the rating plate or manual.