10 Best Flux Core Wire Welder 2025 in the United States

The YESWELDER 135Amp MIG Welder is a versatile and portable option for those in need of a reliable flux-core wire welder. With an amperage output of up to 135 amps, it can effectively weld mild steel plates up to 2/5 inches thick, making it suitable for a range of welding projects. The unit supports three processes: gasless MIG, stick, and Lift TIG, which gives users flexibility depending on their welding needs. If you choose to use TIG, an additional torch is required, which could be an added expense for some.

One of its standout features is the advanced digital display, which enhances usability by providing clear information during operation. Coupled with synergic control, beginners will find it easier to adjust wire feed speed and voltage without much hassle. Safety features, including automatic voltage compensation and overload protection, ensure a safer welding experience.

Weighing only 11.4 pounds, the welder is highly portable, making it convenient for users who need to transport their equipment frequently. While the lightweight design is a plus, some may find the build quality less robust compared to heavier models. The YESWELDER 135Amp MIG Welder is an excellent choice for DIY enthusiasts and hobbyists looking for a budget-friendly yet versatile welding machine. Professionals seeking more heavy-duty performance may want to consider higher-end options.

The Lincoln Electric 90i FC Flux Core Wire Feed Welder is designed for those looking for a portable and user-friendly welding solution, particularly for small jobs. With an amperage range suitable for welding up to 1/4 inch material, it’s ideal for DIY enthusiasts, hobbyists, and home repair tasks. Its lightweight design (only 15 lbs) and included shoulder strap enhance portability, making it easy to use in various locations, from home workshops to job sites.

One of its standout features is the simple control system, with two knobs that allow users to adjust wire speed and voltage easily. This makes it accessible for beginners who may not have extensive welding experience. The inverter technology also contributes to smoother welds and improved efficiency compared to traditional models, which is a definite plus for achieving good results.

While it excels in many areas, there are some limitations to consider. The welder operates on a 120V input, which might restrict its power output for more heavy-duty applications. Additionally, it's primarily designed for flux-core welding, so if you’re looking for more versatility with other welding types, this might not be the best fit. The included accessories—such as a welding gun, nozzle, and protective metal case—add value, offering everything you need to get started right out of the box. But, if your projects demand a higher duty cycle or larger amperage range, you may find this welder underwhelming in those aspects.

The YESWELDER Flux Core Gasless Mig Wire is designed for welding mild steel and stands out due to its gasless operation, which makes it convenient for outdoor use, especially in windy conditions. It has a smooth arc action, high feedability, and is easy to weld with, which should appeal to both beginners and experienced welders. The low spatter and easy slag removal contribute to a cleaner and more efficient welding process.

Additionally, the wire offers full slag coverage and good bead appearance, which results in professional-looking welds. The wire comes on a durable ABS plastic spool that is strong and resistant to damage, ensuring smooth operation in the welding machine. Weighing 2 pounds with a diameter of .030 inches, it’s suitable for small to medium-scale welding tasks.

However, it's important to note that this product does not include a welder machine itself, and users should ensure compatibility with their existing equipment. Ideal for those who need a reliable and easy-to-use flux core wire for various welding projects, particularly in less controlled environments.