Cutting loose the body side mouldings from our 1970 Dart left a row of mounting holes along the delicate character line. Plastic filler would require dimpling the holes to gain a modest chance of it properly adhering and would necessitate slopping it along the full length of the body and blocking in a new line. With lead, the surface thickness of the repair is negligible, preserving the original line. Prep for solder by sanding to bare metal around the hole.