907716002 - Miller Maxstar 400 DC TIG/Stick Welder CE Model

Precision Control for the Professional TIG Welder

If you are a professional welder tackling critical welds in pipe, aerospace, or heavy fabrication, the Miller Maxstar 400 is built to give you absolute control over the arc. This DC TIG and Stick powerhouse provides the smoothest, most stable arcs in the industry. Whether you are welding thin-gauge stainless steel or thick carbon pipe, the Maxstar 400 responds instantly to your technique. The machine features Miller's Blue Lightning™ high-frequency (HF) arc starter, which ensures non-contact arc initiation that is consistent and reliable, eliminating tungsten contamination and the frustration of hard starts.

The interface is designed by welders, for welders. It includes the Pro-Set™ feature, which eliminates the guesswork when setting weld parameters. Simply select the feature you want to adjust, and the display will indicate the professional baseline setting—perfect for getting up and running quickly. For those who need fine-tuning, the machine offers extensive pulse controls. High-speed DC TIG pulsing (up to 5000 Hz) increases puddle agitation, arc stability, and travel speeds while reducing heat input and distortion. This is critical when working on heat-sensitive materials or out-of-position welds.

Stick welding performance is equally impressive. The Maxstar 400 is tailored for E6010 and E7018 electrodes, providing excellent arc characteristics for open-root pipe welding or structural fill passes. The machine also features 9 independent program memories, allowing you to save your favorite parameters for different joints or materials and recall them instantly. No more writing settings on the wall or recalibrating every morning. With the Maxstar 400, you get a machine that adapts to your workflow, not the other way around.

Welder-Centric Features

• Blue Lightning™ HF: Reliable, non-contact starts every time.
• Pulse TIG Capability: Control heat input and distortion with high-speed pulsing.
• Program Memory: Save and recall up to 9 specific weld settings.
• Stick Performance: Optimized for 6010 and 7018 electrodes with arc control.