Welding New Metal Over Rust. Many would argue or assume that the best way to repair non-structural rust out on old cars is to weld in new sheet metal. Welding new to old rusty metal is always tricky especially after grinding the rust off old sections which thins the metal even more.
Since most people dont have a big spot welding attachment we plug weld. Fortunately companies like Auto Metal Direct AMD and Eastwood have released products to help alleviate the rust issues that plague classic Mopar sheetmetal. Welding new to old rusty metal is always tricky especially after grinding the rust off old sections which thins the metal even more.
MIG Welding Sheet Metal Best Metal For Patch Panel.
Use a flap disk or wire brush to get rid of any spray in the weld zone if you want. Since most people dont have a big spot welding attachment we plug weld. This is mig and 18 sheet metal. After the old panel is removed go over the edges of the good part of the floor.