K5613-1 - Lincoln Square Wave 205 AC/DC TIG/Stick Welder

Precision TIG Welding for the Modern Fabricator

The Lincoln Electric Square Wave TIG 205 (K5613-1) represents a significant leap forward in compact welding technology, designed specifically for fabricators, motorsports enthusiasts, and technical educators who demand precision without the bulk of industrial machinery. This multi-process machine excels in AC/DC TIG welding, allowing users to seamlessly switch between welding aluminum, stainless steel, and mild steel with professional results. The inclusion of Stick welding capabilities further expands its utility for heavier repairs or outdoor work where shielding gas is impractical.

Advanced Waveform Control

What sets the Square Wave 205 apart is its suite of advanced arc controls typically found on much more expensive units. The machine features Pulsed TIG functionality, which provides a rhythm to the arc, reducing heat input and preventing burn-through on thin gauge metals—a critical feature for automotive bodywork and intricate art. Additionally, experienced welders will appreciate the adjustable AC Frequency and AC Balance settings. These controls allow you to fine-tune the cleaning action versus penetration when welding aluminum, ensuring a perfect bead profile and oxide removal tailored to the specific alloy and joint configuration.

Intuitive Digital Interface

Gone are the days of deciphering complex analog dials. The Square Wave 205 boasts a bright, high-resolution 4.3-inch LCD display. This user-centric interface simplifies setup with dynamic visuals that guide you through process selection and parameter adjustments. Whether you are setting up for a delicate aluminum root pass or a heavy steel fillet, the screen provides clear feedback, reducing setup time and minimizing errors. The interface supports multiple languages and is designed to be readable even in bright shop environments.

Portability and Power

Weighing in at just 36 lbs, this machine is built for mobility. The dual-voltage capability (120V/230V) means you can plug into standard household power for light duty work or switch to 230V for the full 205 amps of output. The rugged case design includes an integrated storage compartment for tungsten, nozzles, and collets, ensuring your essential consumables are always within reach. With the Lincoln Square Wave 205, you aren't just buying a welder; you are investing in a complete, high-performance welding solution backed by Lincoln Electric's reputation for durability.