If you read our previous spotlight on the Lincoln Electric Square Wave TIG 205, you already know this machine was built with the user in mind. But now that we’ve had more time with it—and put it through its paces—it’s time for a proper review. Whether you're TIG welding aluminum for the first time or pushing your skills in light fabrication, this welder is an impressive tool worth a deeper dive.
A Compact Powerhouse for TIG & Stick Welding
The Lincoln Square Wave TIG 205 (K5613-1) is designed for both AC/DC TIG and Stick welding, delivering high-quality arc performance and robust adjustability, all wrapped in a 36 lb. package. At first glance, its 4.3” bright LCD display and simplified control panel are welcoming. But don't let the ease of use fool you—this machine is packed with pro-level features.
- AC/DC TIG & Stick capabilities for aluminum, steel, stainless, and more.
- Dual Input Voltage (120V/230V) lets you weld wherever you are—garage, jobsite, or classroom.
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Amperage Range:
- TIG: 8–205A
- DC Stick: 15–170A
- AC Stick: 15–140A
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Duty Cycle at 230V:
- TIG: 130A at 100%
- Stick: 100A at 100%
- Dimensions: 14.75”H x 9.27”W x 21”D
- Weight: 36 lbs. (16.33 kg)
Whether you’re working at home or in the field, the portability of this machine—with front-mounted ergonomic handles and a built-in storage compartment—makes setup and teardown a breeze.
Real-World Review: What We Loved
After using the machine extensively (check out our YouTube review for hands-on footage), here are the standout highlights:
✅ Simple and Intuitive Interface
The Square Wave 205’s LCD screen makes setting up the machine nearly foolproof. With clearly labeled settings and a scroll knob, even beginner welders can get started quickly. Switching between AC and DC modes, adjusting pulse settings, and setting AC frequency and balance can all be done in just a few seconds.
✅ Smooth Arc Performance
From start to finish, the arc is stable and responsive. Aluminum TIG welds on AC are clean and consistent, and the machine offers enough customization—like AC frequency and balance—to dial in the perfect bead. On DC TIG, the arc starts instantly and allows for beautiful stainless and carbon steel welds.
✅ Stick Welding Versatility
Don’t let the TIG in the name fool you—the Square Wave 205 handles Stick welding with confidence. We got excellent results with E6010 and E7018 rods, and the arc control was better than expected for a machine in this size range.
✅ Perfect for Light Fabrication & Hobby Use
This welder is tailor-made for hobbyists, motorsports builders, small fabrication shops, and educational settings. It strikes the right balance between simplicity and control. If you're an artist or weekend fabricator, this machine won’t overwhelm you—but it also won’t hold you back.
What’s in the Box?
Right out of the box, Lincoln Electric delivers a ready-to-weld experience:
- Caliber 17 TIG Torch Ready Pak
- Medium Duty TIG Torch Parts Kit
- 25 ft. Foot Amptrol
- Gas Regulator
- 120V to 230V Adapter
- Electrode Holder with Twist-Mate adapter
- Work Cable and Clamp with Twist-Mate adapter
That’s not just a welder—it’s a complete system, no need for extra purchases to get started.
Areas for Improvement
- No MIG Capabilities: This is strictly a TIG and Stick machine. For those wanting to pair a MIG unit with it, we recommend the Lincoln Power MIG 211i—a fantastic complement to the 205.
- No Built-In Memory for Settings: It would be helpful to store multiple settings for different jobs, though the quick setup minimizes this drawback.
Final Verdict: A Welder That Grows With You
Whether you're just starting your welding journey or looking to upgrade your workshop with a portable AC/DC TIG unit, the Lincoln Electric Square Wave TIG 205 is one of the best all-around machines in its class. Its intuitive design, exceptional arc quality, and dual-process versatility make it a smart investment for long-term use.
Looking to step up your aluminum TIG game? This is your machine. Need a reliable Stick welder in a compact frame? The Square Wave 205 has your back.
📞 Have questions or ready to buy? Contact us today!
Call 877-930-5690 or email support@bakersgas.com for expert advice and the best deals on welding machines, accessories, and more.
Let Baker’s Gas and Welding help you weld with confidence—every step of the way.
