This is what I did yesterday. I am officially a certified master welder lol!
I had to weld up 2 patches underneath the drivers rocker panel. I first cut out the cancer and then made a patch. then i welded the patches in and grinded the welds smooth. Then i applied this stuff called duraglass. It is a fiberglass type thing that boat repairmen use. It totally seals the metal from any type of moisture and when it dries its harder then a rock. Today i sanded it smooth with 40 grit and applied some bondo that is currently drying. Then I will sand the bondo and it will be ready for sealer. Its kinda weird because the only places i have found rust is underneath the rockers and i am fortunate the cancer spots are only little patches. Well thats it for this weekend i am very tired and getting ready to celebrate memorial day with my family we are preparring 10 racks of Ribs, i cant wait. Take it easy guys and happy memorial day.