And while MIG is very versatile for steel and aluminum (with the addition of a spool gun), TIG (tungsten inert gas) welding is becoming ever more popular in the 4x4 hobby.

If you want to weld aluminum, you might think skill-intensive TIG welding is the only way. However, if you already own a MIG welder, an add-on spool gun is a viable option. Retailing for $276 ...

Miller Electric Manufacturing's Spoolmatic 15A spool gun for aluminum welding comes with a 15-foot cable and is capable of wire feed speeds between 70 and 875 inches per minute, pushing wires 0. ...