USWELDWIRE Aluminum Welding Spool Gun – Professional-Grade Replacement for Lincoln Magnum 100SG




Take your aluminum welding to the next level with this professional-grade spool gun replacement for the Lincoln Magnum 100SG. Precision engineered by USWELDWIRE to deliver optimal aluminum welding performance, this high quality spool gun is designed for durability and ease of use.

Superior Aluminum Welding Performance

The USWELDWIRE spool gun is optimized for aluminum GMAW (gas metal arc welding), delivering a smooth, clean weld for projects and repairs. The push-pull design provides excellent wire feedability and ideal heat management for reduced distortion on thin aluminum workpieces. Operate in either 2-step or 4-step trigger mode to match your welding style and application.

Heavy Duty Yet Lightweight Construction

Built to withstand the demands of daily welding operations, this spool gun features an impact resistant polyamide housing that can handle bumps and knocks. The lightweight composite frame weighs just 4.4 lbs, allowing for increased operator comfort and less fatigue during prolonged welding jobs. The flexible 3m cable gives you the maneuverability needed to weld in tight spaces.

Quick Setup and Convenient Features

Designed as a direct replacement for the Lincoln Magnum 100SG, connection to compatible Lincoln power sources is quick and hassle-free using the 22-pin interconnection. The adjustable handle is ergonomically designed to fit your hand comfortably. The super tough polyurethane drive roll ensures positive wire feed with reduced slippage. Integrated vents prevent excessive heat buildup for extended spool gun life.


This spool gun was engineered as a drop-in replacement for the Lincoln Magnum 100SG, making it compatible with the following MIG welders:

– Lincoln Electric Power MIG 210 MP
– Lincoln Electric POWER MIG 255C
– Lincoln Pro Mig 140
– Lincoln Electric Invertec V350-PRO
– Lincoln Electric INVERTEC V275-S
– Millermatic 141/211 Auto-Set MIG Welder

It works seamlessly with any 4-pin trigger designed for Lincoln Magnum or Tweco #1 mini spool guns.

Configure Your Way

The USWELDWIRE spool gun comes ready to weld out of the box with a pre-installed .030″-.035″ drive roll for welding aluminum up to 3/32″ thickness. Optional drive rolls are available for .023-.030″ or .035″-3/64″ wire sizes. Configure the length to your needs – available in 10ft, 15ft, or 25ft cable lengths.


– Cable Length: 10 ft
– Wire Capacity: Up to 8oz wire spool
– Wire Size: .030”- 3/64” accepts optional drive rolls
– Wire Feed Speed: Up to 600 ipm depending on power source
– Trigger Connector: 4-pin plug
– Power Pin 1&2: 60A MAX each pin
– Weight: 4.4 lbs

Included in the Box

– .030″-.035″ Urethane Drive Roll (Pre-Installed)
– 4mm Brass Brush
– Adjustable Shoulder Strap
– Manual

Designed for Reliability

This spool gun was engineered with the welder in mind and is backed by a 1 year manufacturer’s warranty. Depend on the USWELDWIRE aluminum MIG gun to deliver consistent, high performance welds day after day. With proper operation and maintenance, this spool gun will provide years of reliable service for all your aluminum fabrication and repair jobs.

Ideal for DIY and Professional Welders Alike

Whether you’re a weekend DIY warrior tackling aluminum fabrication projects or a full-time welder-fabricator, this spool gun empowers you to take your aluminum MIG welding to the next level. The ergonomic design and push-button operation allows for easy handling and less fatigue over long welding sessions. Dial in your optimal settings with separate wire speed and voltage control. Produce spatter-free welds with minimal smoke and fumes.

Tackle More Aluminum Jobs with Confidence

The USWELDWIRE spool gun opens up new possibilities to weld a wider range of aluminum alloys and thicknesses. Weld up to 3/32″ aluminum plate with minimal distortion. Dial in the perfect settings to weld thinner aluminum tube, sheet metal, and repair cast aluminum transmission housings, intake manifolds, and valve covers. Expand your services by taking on more aluminum fabrication work.

Order With Total Peace of Mind

We stand behind our products with a 100% satisfaction guarantee. We’re committed to providing exceptional customer service and technical assistance to get you up and running quickly. Our US-based support team is ready to help if any issue arises with your spool gun. Contact us to answer any questions about compatibility, setup, or operation.

Don’t settle for less than the best for your next aluminum welding project. Order the USWELDWIRE high performance spool gun replacement for the Lincoln Magnum 100SG today!


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