Lincoln Electric Magnum 100SG Spool Gun
The Lincoln Electric Magnum 100SG Spool Gun is a solid, purpose-built solution for shops and hobbyists who frequently weld aluminum.
- Mass
- Approx. 3.5 lbs (1.6 kg)
- Cable Length
- 15 ft (4.6 m)
- Spool Capacity
- 4 in / 1 lb spools
- Wire Diameter Range
- 0.030–0.035 in
- Smooth aluminum wire feeding
- Reduces birdnesting issues
- Comfortable ergonomic design
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Running it
The Lincoln Electric Magnum 100SG Spool Gun is a purpose-built solution for welders who need to work with aluminum wire without the feeding headaches that plague standard MIG guns. Designed to pair with compatible Lincoln Electric wire feeder welders, this spool gun mounts a small spool of soft aluminum wire directly at the gun itself, drastically shortening the distance the wire must travel before reaching the contact tip. This design eliminates the common problems of wire tangling, birdnesting, and burnback that occur when soft aluminum wire is pushed through a long conduit liner from a remote feeder, giving welders consistent, reliable feeding every time they pull the trigger. Built with the durability and performance standards Lincoln Electric is known for, the Magnum 100SG features an ergonomic, lightweight design that reduces operator fatigue during extended welding sessions. The gun's compact spool holder accommodates smaller diameter spools, making it easy to manage and swap out wire on the job site or in the shop. Its rugged cable assembly and connector are engineered for durability in demanding welding environments, while the trigger and internal drive mechanism are calibrated specifically for the softer characteristics of aluminum wire, ensuring smooth, uninterrupted feeding at the arc. Ideal for fabricators, hobbyists, and professional welders who regularly transition between steel and aluminum projects, the Magnum 100SG Spool Gun expands the versatility of compatible Lincoln Electric welding machines without requiring a dedicated aluminum welding setup. It's particularly valuable in applications like automotive bodywork, marine fabrication, and general metalworking shops where aluminum welding is an occasional but essential task. By addressing the unique feeding demands of aluminum wire at the source, this spool gun helps welders achieve cleaner beads, fewer interruptions, and greater confidence when tackling aluminum welding projects.
The Lincoln Electric Magnum 100SG Spool Gun is a solid, purpose-built solution for shops and hobbyists who frequently weld aluminum. It eliminates the common feeding problems associated with pushing soft aluminum wire through long conventional guns, delivering smoother arcs and cleaner welds. While its compatibility is limited to specific Lincoln power sources and the small spool capacity means more frequent changes, its reliability, comfortable ergonomics, and consistent performance make it a worthwhile investment for anyone serious about aluminum MIG welding.
The full plate
As stated by the manufacturer, 5 lines.
| Cable Length | 15 ft (4.6 m) |
|---|---|
| Spool Capacity | 4 in / 1 lb spools |
| Wire Diameter Range | 0.030–0.035 in |
| Compatibility | Select Lincoln Power MIG welders |
| Weight | Approx. 3.5 lbs (1.6 kg) |
What holds up
- Excellent aluminum feeding without wire tangling
- Solves birdnesting issues common with long feed paths
- Comfortable, well-balanced gun for extended use
- Simple integration with compatible Lincoln power sources
- Durable construction handles shop wear well
- Reasonably priced compared to competitor spool guns
What costs you
- Only compatible with specific Lincoln Electric machines
- Small 1 lb spool capacity requires frequent reloading
- Cable length may feel limiting for larger workspaces
- Replacement consumables can be pricier than standard MIG guns
- No digital display or feed rate indicator on gun itself
Stated features
- Designed for welding aluminum with soft wire feeding
- 15 ft cable length for extended reach
- Compatible with select Lincoln Power MIG welders
- Handles 4 in (1 lb) wire spools
- Push-button trigger for precise arc control
- Lightweight ergonomic gun body reduces fatigue
- Dual-groove drive roll compatibility for wire sizes
- Quick-connect Magnum-style consumables
4 people who bought it
I struggled with birdnesting for months using a standard gun on aluminum. This spool gun fixed that instantly. Feeds smooth and consistent every time.
Works great with my Power MIG machine, but I wish it held bigger spools. Otherwise very happy with the performance and build quality.
Switched from a push-pull setup and this is much simpler. Cable could be a bit longer for my setup, but overall it does the job well.
Lightweight in hand and easy to control. No more feeding issues since I started using this gun for aluminum projects.
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