2011 Miller Syncrowave 350 LX TIG Welder | 400A | Weldcraft 3500SS Cooler

2011 Miller Syncrowave 350 LX TIG Welder & Weldcraft 3500SS Cooler

High-Precision Industrial TIG/Stick Station | 400 Amp Capacity

Available for immediate acquisition is a 2011 Miller Syncrowave 350 LX, a premier industrial TIG/Stick welder known for its exceptional arc stability and heavy-duty performance. This machine is a true "workhorse," capable of handling everything from delicate thin-gauge aerospace components to heavy-duty structural plate.

This specific unit comes as a complete, ready-to-weld package integrated with a Weldcraft 3500SS Water Cooler, ensuring peak performance during long-duration, high-amperage production runs.

Technical Specifications

• Manufacturer: Miller Electric
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• Model: Syncrowave 350 LX
• Year of Manufacture: 2011
• Welding Processes: TIG (GTAW), Stick (SMAW), Pulsed TIG (Optional Add-on)
• Amperage Range: 3 to 400 Amps
• Rated Output: 350 A at 34 VAC, 40% Duty Cycle
• Input Power: 200–230 / 460 VAC, Single Phase, 60 Hz
• Weight: Approximately 496 lbs (Power Source only)

Included Equipment & Premium Features

• Weldcraft 3500SS Water Cooler: A high-performance stainless steel cooling system that protects your torch and consumables during high-heat applications, significantly extending part life.
• Syncro Start Technology: Allows for customizable arc starts (Soft, Standard, or Hot) based on the tungsten diameter and material thickness, providing superior consistency.
• Digital Meters: High-visibility digital displays for both amperage and voltage, allowing for precise parameter setting and verification during the weld cycle.
• Built-in Pulser: Helps reduce heat input on thin materials, minimizes distortion, and provides better puddle control for vertical or overhead welding.
• Heavy-Duty Running Gear: Includes the factory cart and cylinder rack for easy shop mobility, essential for a machine of this substantial weight.
• Industrial Grade Construction: Built with Miller's legendary transformer-based design, offering a "stiff" and reliable arc that many veteran welders prefer over modern inverter units.

Key Features of the 2011 Syncrowave 350 LX

The 350 LX is a high-performance industrial machine. By 2011, this model featured Miller's most advanced transformer-based controls before the industry shifted toward smaller inverters.

• Massive Power Range: A true industrial range of 3 to 400 Amps. It can handle everything from thin-gauge sheet metal to 1/2" thick aluminum and 5/8" thick steel.
• Built-in Pulsed TIG: This "LX" model includes integrated pulsing controls. This is critical for controlling heat input, which reduces warping on thin stainless steel and provides better puddle agitation.
• Syncro Start™ Technology: Provides three selectable starting conditions (Soft, Standard, or Hot) based on your tungsten diameter. This ensures a consistent arc strike without "tungsten spitting" or sticking.
• Squarewave Output: Miller’s legendary AC Squarewave technology provides a highly stable arc for aluminum welding, preventing arc rectification and maintaining a clean weld puddle.
• Balance & Dig Control:
• AC Balance: Adjustable to provide more "cleaning" (oxide removal) or more "penetration."
• DIG Control: Enhances Stick (SMAW) performance, ensuring the arc doesn't snuff out when welding with difficult rods like E6010.
• Last Procedure Recall: A massive time-saver for multi-process shops. It automatically remembers your previous settings when switching back and forth between Aluminum TIG, Stainless TIG, and Stick.
• Fan-On-Demand™: The cooling system only runs when the machine is under load, which reduces shop noise and prevents the machine from sucking in unnecessary dust and metallic grit.