On a 2002 Jetta TDI, there is dirt collected at the bottom of the fender near the door hinge area. After removing the rotting fender, I find that there is some rust penetrating the structure below it. It looks like I could clean that up, and form a 3/16" patch and MIG it into place. Except at one point the structure appears sound.
Can anyone with body repair experience provide any guidance?
My thought is to clean out the rust, patch it, and then rust treat the inside of the structure.