In this edition: seam sealers and TIG welding. Ron Covell answers ... do yourself a favor and buy some 0.045-inch filler rod—it's MUCH better for welding body panels than the 1/16-inch rod ...

This close-up view reveals how TIG welding a thin metal strip helps to form a tighter, more consistent gap between the front fender and driver-side door. See All 18 Photos 06 .

Welding requires skill, knowledge, and equipment. Some 15 or 20 years ago just a handful of 4x4 hobbyists were dabbling with metal inert gas (MIG) welding in their home shops, mostly welding steel.

In this edition: seam sealers and TIG welding. Ron Covell answers ... do yourself a favor and buy some 0.045-inch filler rod—it's MUCH better for welding body panels than the 1/16-inch rod ...