Best Cheap MIG Welders Under $400 in 2021 / 2022

MIG welding is one of the oldest forms as it offers the versatility, flexibility, ease of use and is by far one of the most affordable types of welding there is. Compared to other forms including TIG, the experience level can range anywhere from beginner to the most experienced welders making it one of the most used forms today. The versatility lies in being able to weld all types of commercial metals and alloy while giving you a strong weld that virtually anyone can do.

The following review looks at the Top 5 Cheap MIG Welders Under $400 in 2021 which takes the guesswork out of your next purchase. These MIG’s may be cheap in price, but the precision and performance make them must have’s for DIY enthusiasts and professional welders alike.

1. RazorWeld ViperMig 180amp Mig Welder – 9.4

RazorWeld ViperMig 180amp Mig Welder Review


The ViperMIG by RazorWeld is easily the best choice in this review as it boasts plenty of power and is one of the easiest MIG welders to use. The ease of use and simple setup will have you welding out of the box and comes with everything you need to weld from day one. It’s powered by an efficient and ultra-quiet 180-amps of power and features a very durable cast feed aluminum assembly.

What truly sets the ViperMIG 180 MIG welder apart from the competition is the dual voltage capability and of course the price. Coming in hundreds less than other comparable models, RazorWeld a 10-foot MIG gun, flowmeter, stinger, and a 9-foot ground wire.

As for the performance, the ViperMIG gives you a super-strong weld which comes out smooth every time and offers a constant arc with minimal splatter. At this price and considering what’s all in the package, it’s no wonder why we’ve given it a 9.4 out of 10.


  • Amazing price point
  • Portable
  • Compact and lightweight
  • Strong and durable aluminum drive system
  • Smooth and stable arc


  • Does not include an owners manual
  • Spool gun not included

2. Lincoln Electric K2278-1 Handy Core MIG Welder – 8.5

Lincoln Electric K2278-1 Handy Core Review


To have any best of review without a Lincoln Electric welder is just unheard of which is why the 2nd option in this review is something worth considering. The Handy Core MIG Welder has earned a perfect 5-star consumer rating and is one of the newest MIG’s under $400 out there. Aside from the ridiculous price, you’re getting a lightweight compact welder which can weld mild-steel to a max thickness of 1/8-inch.

The Lincoln Electric Handy Core runs off typical household current at 115v. While not dual voltage functional, it serves the purpose of mobile welding in and around the house. Another bright spot is that it will function perfectly fine off a standard 20-amp fuse which is unlike other MIG welders in its class that has to be upgraded to a different fuse.

As for the performance, you’re getting Lincoln Electric’s high-quality in precision meaning you’re getting spot-on welding which is simple enough for beginners, but extendable for professional use also.


  • Durable build quality
  • Great price
  • Compact and lightweight
  • Easy to use, even for beginners
  • Even without gas, great for use with traditional DIY welding projects


  • Does not accommodate gas
  • Not suitable for professional or heavy-duty welding projects

3. Forney 29901 125 FC MIG Welder Start-Up Kit – 8.5

Forney 29901 125 FC MIG Welder Start-Up Kit Review


Forney is one of the lesser-known manufacturers out there, but it’s always good to find a diamond in the rough. After hours of field use, this 125 MIG Welder is the perfect option for beginners and intermediates. Coming in around $200, you get the complete start-up kit which gives you everything you need out of the box.

The Forney 125 FC MIG Welder is perfect for the average do it yourselfer, repair projects around the jobsite and welding enthusiasts looking to enhance their passion. Weighing in at just over 50 pounds, it’s a bit heavier than others in its class, but gives you improved durability which means it’ll be around the shop for years to come.


  • Portable and lightweight
  • Good build quality for a compact welder
  • Does not need gas
  • Simple setup and ease of use
  • Super-quiet


  • Burns through 20-gauge tube fast
  • Not suitable for heavy-duty projects

4. Smartxchoices MIG130 Gas-Less Automatic Feed Flux Core Wire Welding Machine – 8.5

Smartxchoices MIG130 Gas-Less Automatic Feed Flux Core Wire Welding Machine Review


Smartchoices is another smaller manufacturer of MIG welders, but this gas-less automatic feed flux core welding machine is nothing that should be overlooked. At this price you’ll never go wrong as this is by far the best bargain in this review for the money. Coming in at under $100 you would think you’re getting what you pay for, but after one use around the shop you’ll come to appreciate it.

This cheap MIG welder standard household current at 110v and gives you a variable welding current from 50 – 120-amps. Featuring a great duty cycle for what you’ll be using it for which comes in at 10% @ 105AMP and 35% @ 60 AMP respectively means less downtime and more time doing what you love the most.

Out of the box, Smartchoices throws in the MIG welder, welding gun, mast, sample wire, and a 2.5mm brush. At this price, what more could you want.


  • Smooth, stable wire feed
  • Includes tip and steel wire out of the box
  • Lightweight
  • Compact
  • Simple to learn, even for newbies


  • Entry level welder, too basic for professional use
  • Could be more durable
  • Doesn’t put out the entire 130-amps, estimated at 120

5. Smarter Tools MIG-140H 120V Solid Wire and Flux Cored Welder – 8.3

Smarter Tools MIG-140H 120V Solid Wire and Flux Cored Welder Review


Finishing out this review is a 120v flux core and solid wire MIG welder which also comes in under $400. Smarter Tools has made a reputation for themselves with high-quality, low-cost power tools and this MIG is no exception. For the price, you get a MIG with a great deal of versatility giving you a wide range of amps from 0 – 140.

Standout features includes a drive system that is fully adjustable which minimizes crushing and wire tangling. On the front, there’s simple knobs which offer control over gas shielded and flux core welding with a performance of a smooth arc with little to no splatter.


  • MIG torch included
  • Great for newbies and intermediates
  • Simple to learn and setup
  • Smooth, continuous wire feed
  • Doesn’t require a lot of time to cool down


  • Wire feed mechanism is less than optimal durable
  • Polarity must be set for flux core and gas welding
  • Recommended to use a 20-amp breaker


Customary of what we do best, we’ve taken the time to breakdown the best cheap MIG welders of 2020. All the above offer great value, strong performance and are affordable for any DIY welder. If you have any questions, feel free to drop us a comment below and check back often as our site is continually updated with the info you need the most.