6 Best Flux Core Welders – Great for Any Purpose!

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Last updatedLast updated: August 02, 2021
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If you love to pass the time doing small welding jobs at home during the weekend, you will find that flux core welding is just for you. This kind of welding is mainly for beginners or hobbyists who do not want a complicated machine. You only need short practice, and you will be okay. Most of the best flux core welders are simple to set up and use right after unpacking. Additionally, they are light in weight, which makes them portable. You do not have to carry around your gas cylinders, unlike other kinds of welders. We are not stopping at that; we will have a better insight on that when discussing the benefits later in the article.

Here we discuss six welders ranking among the top in the market. The editor’s choice in this assessment, VIVOHOME Portable Flux Core Welder, comes on top of our list because of the unique functional features it offers. As a gasless machine, it is straightforward to operate. It features four levels of current flow settings, which allows you to set your welding speed. Its lightweight and robust design make it convenient and easy to carry. You can find the full review below as you read the article for other exciting features of this product. We have also reviewed other products since they also have unique features that could fit your preferences.

When doing our research, we focused on specific essential features such as dimensions, weight, type, duty cycle, range, and warranty. The reviews of each product on our list is a must-read when choosing the best flux core welder. Towards the end, the in-depth buying guide explains why each of the above features is important. Below is a comparison table featuring the top picks at a glance.

Top 6 Flux Core Welders Review 2021


VIVOHOME MIG130Editor's Choice

  • Dimensions: 19.8 x 14.7 x 12.6 inches
  • Weight: 36.2 lbs
  • Type: MIG
  • Duty cycle: 60%@50A
  • Range: 50-120A
  • Warranty: not specified

More features: prevents oxidation; suitable for mild and stainless steel; adjustable welding speed; welding helmet included

One of the best portable flux core welders must be the VIVOHOME Portable Flux Core Wire No Gas MIG 130 Welder Machine. A beginner would prefer something portable so as they can do their tests and experiments anywhere they wish. You can use this welder as soon as you receive the package. This machine is compact and light in weight, with a comfortable handgrip that makes it easy to move and use.

If you want to weld a broken garage door, this welder will typically give you a perfect finish like that of a professional welder. The variable feed speed control allows you to weld at your own pace, whether fast or slow. It does an ideal job on mild steel, stainless, or aluminum sheets. It is, however, good to note that it is more suitable for thin sheets of metal, so if you have heavy tasks, you will find it better to look for a more versatile machine. It comes with many extra accessories at purchase. These include one welding gun with on/off safety control, a welding helmet, a grounding clamp, one welding wire brush, and several other small accessories. These items typically make it easier for you to use the welder.

Why is it special?

  • Portable
  • You can customize the rate of the wire feed
  • Works with the 110V power outlet
  • It is a compact machine with an easy-grip handle
  • It is a compact machine with an easy-grip handle

What are the flaws?

  • Directions are not for beginners
  • Is a DC only welding machine
RELATED: 6 Best 110V MIG Welders for the Smoothest Welds Imaginable

LOTOS MIG140Premium Pick

  • Dimensions: 22 x 10 x 16 inches
  • Weight: 54 lbs
  • Type: MIG
  • Duty cycle: not specified
  • Range: not specified
  • Warranty: 1-year limited

More features: aluminum wire feeder; rated output; wire range; welding mask and wire included


The LOTOS MIG140 features the most versatile and perfect welder for do-it-yourself light workshop duties at a very affordable price. If you want to switch from manual to semiautomatic wire feeding, you only need to press a button and voila. The semiautomatic feature is especially useful if you have a long welding session. In this mode, you do not need to engage your finger on the button continually. Something impressive about this welder is that if you want to use it for MIG welding, the regulator and the gas setup in the welder gives you that convenience. The MIG option means you can use it on almost any metal, including aluminum. This welder can work with a variety of metals, including stainless steel and aluminum. The maximum output for this welder is 110V, which is not that suitable if you have some severe welding job ahead of you.

The fact it cannot produce that much power means that thicker metals like steel plate will not fuse that well. It will do great if you are welding sheets of steel. You know how it feels when your new machine breaks down days after delivery. The 30-day money-back guarantee is a sure guarantee that your money will not go to waste. You can use your welder with the peace of mind and have a feel before committing to long-term usage. There’s a one-year limited warranty for any manufacturer’s defects or issues that might occur with the machine, which is a big bonus for you.

Why did it make our list?

  • Two digital displayers
  • 1-year limited warranty
  • Aluminum wire feeder
  • Durable and long-lasting
  • No assembly required

What is not ideal about it?

  • Relatively high price
  • Limited instruction manual
RELATED: 5 Best MIG Welders Under $500 – Cheap and Efficient Way to Get the Job Done!

SUNCOO MIG 130 WelderExtra Storage Space

  • Dimensions: 13.4 x 7.2 x 11.4 inches
  • Weight: 33 lbs
  • Type: MIG
  • Duty cycle: [email protected]%
  • Range: 110V
  • Warranty: not specified

More features: portable; feed speed control; wide applications; no gas function; welding mask included

SUNCOO MIG 130 Welder has this sturdy and durable stainless-steel body. You can use the welder in construction sites with the harsh surrounding without the fear of damage. The durable yellow paint prevents rust, wears, and ensures a long life for your machine. The welder operates on both110 Volts and 220 volts. Therefore, it does not matter the kind of welding task you want to do. It can handle small home welding operations or jobs that are more professional. To help get the most out of your welder, a simple touch of a knob allows you to adjust the speed at which you can comfortably feed the wires, which makes it easy to operate. The ten levels of wire feeding will enable you to choose the rate that would work for you. This feature makes it among the best entry-level MIG flux core welder.

What’s more? Most welding machines tend to overheat, mainly if you use it continuously for some time. The two air vents in this device allow air to flow and drive away heat away from the machine and minimizes any risk of overheating. Talking of its portability, it would make for the best hobby flux core welder since it is excellent for jobs that require constant movement and workshop changes. The compact size with a weight of 36.5 pounds allows you to move thanks to the absence of gas cylinders. Do you want to carry your welding equipment? Of course, yes. Your machine got some extra storage space where you can store your welding gun, wires, and other welding accessories as you move. Furthermore, the welder features a torch with a safe on and off switch, which means that you can work in rooms or dark corners without a lot of light.

Why is it special?

  • Wide applications
  • Professional and safe to use
  • Portable
  • Extra storage space
  • Very affordable

What are the flaws?

  • The instructions manual is not beginner-friendly
  • Dimensions: 17.8 x 12.1 x 11.7 inches
  • Weight: 18.1 lbs
  • Type: MIG
  • Duty cycle: 35%
  • Range: 30-120A
  • Warranty: not specified

More features: durable; wide applications; overload safety protection; welding mask included

The first thing worth mentioning about Display4top Portable MIG Welder Flux Core is that it is a robust machine with heavy-duty stainless-steel construction. The durable red paint ensures that it is long-lasting and that it will give you years of service. Something we liked about this machine is the unique safety mechanisms that ensure minimal working difficulties and accidents.  The overload protection shuts off your device when it exceeds a specific temperature. This feature helps you in case you forget the time and go over the duty cycle. It will prevent burns and short-circuiting in such dire instances. It cools off the welder by force and restarts when it regains its original temperatures. The internal fan cooling system also helps to cool the welder while working to avoid overheating the device.

If you are a beginner without the professional skills in welding, you can set your welding speed using some four buttons. You can also choose the rate in which you feed your wires, thanks to the ten levels of wire feeding settings. The Dispaly4top welding machine is mini in size but is a perfect option if you want something easily portable. The comfortable carrying handle, lightweight, compact design makes it easy to carry, store, and use. When buying this package, you will be happy to realize that it comes with the welding wire, a protection mask, and a chipping hammer.

What do we love it for?

  • Internal fan-cooling system
  • Protects against voltage fluctuation
  • Overload safety protection
  • Suitable for welding aluminum, carbon steel, and stainless steel

What were we disappointed with?

  • The instructions are almost nonexistent
RELATED: 8 Best MIG Welders — Reviews and Buying Guide
  • Dimensions: 20 x 13 x 11 inches
  • Weight: 39.5 lbs
  • Type: MIG
  • Duty cycle: 15%
  • Range: 80-150A
  • Warranty: not specified

More features: adjustable power settings; feed speed control; good for iron and mild steel; automatic thermal safety protection

SUNGOLDPOWER Flux Core Welder is a gasless MIG welder. It is a portable device weighing only 39.5 lbs, and this makes it easy to carry around. The fact it does not use a gas cylinder adds to its portability, which is a massive benefit if you want to bring it to your workplace. It is effortless to use and comes with everything that you will need to start welding as soon as you unpack. It also comes with a manual, which makes it easier to operate.

If you are searching for the best 110v flux core welder, this welder could be what you need. It can run with low input power provided by your household current. You can, therefore, run this machine and do your welding at home. On the flipside, welders mention that it cannot perform the more complex and professional tasks like the more expensive models do. A machine with thermal overload protection ensures that your device will have a longer lifespan. The SUNGOLDPOWER MIG 150A Welder has a safety system that not only protects your engine against overloads but also decreases the chances of accidents.

What are our favorite features?

  • Easy to use
  • Doesn’t need gas
  • Portable
  • Budget-friendly
  • Runs with low input power
  • Perfect for beginners

What could be better?

  • Cannot handle heavy jobs

Forney Flux Core WelderBest for Beginners

  • Dimensions: 12 x 18 x 24 inches
  • Weight: 51 lbs
  • Type: MIG
  • Duty cycle: 20%@80
  • Range: not specified
  • Warranty: 6 months against a manufacturer defect

More features: easy to use

The Forney Easy Weld might not be a multipurpose welder like the Lotos MIG140, but it is the right choice if you are looking for the best easy to use flux core welder. The manufacturer’s instruction says it welds up to 1/4 inch, which is correct, but the process might not be as smooth as you would expect. It is the best flux core welder for beginners interested in light welds in their garage or around the home. The 120V input and 125-amp output are excellent features for a machine of its size though it would not win any prize on power. Its cost is far less than other welders are so it will have the job done if you are working on a small budget. It’s a perfect machine for beginners or for those who won’t use it frequently since it’s so versatile and easy to use, there are no special skills needed to work with it.

What are our favorite features?

  • Good power output
  • Suitable for mild steel welding
  • Easy to use
  • Self-shielded
  • Sturdy and durable

What could be better?

  • Not a heavy-duty welder

Things to Consider

If you are looking to buy the best home flux core welder, you risk purchasing an overpriced machine that does not meet your needs, especially if it is your first time in the market. Welders with more features will be more expensive, so you need to narrow down the features you need in a welder. If you do that, you can escape the high price and still get the best pick for your needs. Make sure you read out the full buying guide carefully to make an informed decision.

Why do you need a flux core welder?

6 Best Flux Core Welders - Great for Any Purpose!Flux core welding machine comes with many advantages, which you cannot find in most models. If you are planning to purchase one, the following benefits might convince you why you need to invest in one.

  • Portability

Typically, with a flux core welder, you do not need a shielding gas, so you do not require a gas tank, which makes your welding experience more flexible.

  • Easy to operate

This device does not need a highly skilled welder to work. After learning how to set up the equipment, the actual welding technique is relatively simple and easy to master.

  • Does not need clean sites

Unlike most welding practices, flux core welding does not require a clean joint. If there is no moisture, paint, and oil on the welding site, this welding can burn through rust and other metal imperfections.

Features to consider before you buy a flux core welder

Finding the many brands and types of flux core welders available, selecting the right one for your needs could be a confusing and challenging decision. It does not have to be that way. Some key elements that make the best flux core-welding machine include dimension, range, type, weight, duty cycle, and warranty. Below is a more in-depth insight into each of these features, which will help you make the most suitable decision.


Although many flux core welders are typically compact, you might want to consider your storage space when choosing the size of the machine. The SUNCOO MIG 130 Welder can fit in a relatively small area. It measures 13.4 x 7.2 x 11.4 inches, so if you are working in a limited room, this might work for you.

You need to check the measurements of your space, which should correspond with the dimensions of the welder before purchasing. You would not want to buy a perfect machine that will not fit in the intended space.


You might need to move your workstation from time to time. A portable welder would be crucial. Since carrying a welder would be tiring, your welding machine should not be substantial.

You might also want to choose a device with a safety handle so as you carry it with ease.
If portability is the most crucial factor for you, you might want to consider Display4top Portable MIG Welder Flux Core. It only weighs 18.1 lbs. It has a comfortable carrying handle, and its lightweight, compact design makes it easy to carry and use.


Always ensure that you know the various types and brands of flux core welders so that you can pick the one that fits your needs. Take your time to analyze before settling on a purchase. Make sure that your choice is versatile enough to cover a variety of welding processes. Though each type of product has its unique properties, you might want to choose for its versatility.

Duty cycle

6 Best Flux Core Welders - Great for Any Purpose!When buying a flux core welder, you need to learn about its duty cycle. The duty cycle shows how much time you can run your welding machine before it needs to rest. We calculate the duty cycle as a percentage out of ten minutes. For instance, a welder with a duty cycle of 20% will work for two minutes after which require a rest period of 8 minutes. Some machines have a shorter duty cycle, which means that they are not suitable for welding thicker metals. If you are welding on simple thin metals or welding for fun, you do not need a machine with a long duty cycle. VIVOHOME Portable Flux Core Welder takes the medal in this because you can use it for longer before it needs a break. A welder gun with a high duty cycle works well since it is more efficient and does not waste much of your time.


To pick the right welder, you need to consider its output amperage. The efficiency of your flux core welder depends on this.

Most flux core welders have output ranging between 25 and 140 Amp.
With an ampere range of 80-150, SUNGOLDPOWER Flux Core Welder lets you work on a variety of metals. Therefore, whether you are working on steel, stainless steel, or even aluminum, it will handle anything you throw at it.


The warranty of the product is another feature you need to consider when buying your welder. Most popular brands will provide you with a decent warranty. Any product backed by a warranty gives you the confidence that it will last for long. In case it does not, you can have it replaced or repaired depending on the nature of the defect. Of all the flux core welders that we have reviewed, our Premium Pick the LOTOS MIG140 WireFlux Core Welder comes with a 30-day warranty, which gives you 100% satisfaction. This option allows you to use the welder before committing for long terms. It comes with a one-year limited warranty for any manufacturer’s defects or issues that might occur with the machine within that period.


When welding, you must have the necessary safety equipment specific to the core welder. It is crucial to note that the sparks produced by the flux core welding machine seem more aggressive than those from other welders. You should put on the appropriate protective gear during welding sessions. You require UV shielding, and anti-inflammatory vest and gloves. You might also need to work in a well-ventilated room or better still weld from an open space. The reason for this is that the amount of smoke and gas that the welding creates can fill a room in less than ten minutes, which might be unfriendly to your precious lungs. Here is an essential list of items that you might need when preparing to weld for the first time: flux core-rated leather gloves, flame resistant jacket and pants, and UV-rated welding face mask.

Flux core can weld thicker than MIG. The thickness depends on two factors: the amount of power you are running through the machine, and the gauge of the flux core wire. With 115V power, and with 0.35-inch cable, which is the average setup for at- home welding, you can weld up to ¼-inch thick steel. Alternatively, running on 220V allows you to weld up to ½- steel. You would need a specialized wire to weld aluminum using the flex core welder. The best way to weld aluminum is by use of a MIG and aluminum stick.

Apart from the safety equipment that you require when welding, your essential welding set includes a power source, wire feeder, welding gun, and welding cables. Since you are using gas shielded electrodes, the gas-shielded wires will require a gas-shielded system, and this factor might affect the type of welding gun that you need to use. You can choose to use fume extractors for the process. The high voltage and currents in the welding process often produce large amounts of gas, especially when working within a room. You might end up incurring extra costs for ventilation equipment for proper health and safety.

Our Verdict

VIVOHOME Portable Flux Core Welder can handle a wide range of applications, including mild steel welding, stainless or aluminum sheet metal, or thicker steel with flux-cored welding, which directed us to pick it as our Editor’s Choice. Our Premium Pick is LOTOS MIG140 WireFlux Core Welder, which has a very durable metal construction and a 1-year limited warranty. It features a versatile and perfect welder at a very affordable price. It also has a flexible design that enables you to make a transition from manual to semiautomatic wire feeding.

The SUNCOO MIG 130 Welder takes the third position. This machine is ideal for welding mild steel and iron. You also have some extra storage space where you can store your welding gun, wires, and other welding accessories as you move. We recommend that you read and use the info in our buying guide, which will help you choose the best flux core welder for your needs. We wish you all the best, as you do your shopping.

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