Repairing welding burn through?
I am currently in the process of replacing the floor pans in my 67 Camaro SS. I have cut the old ones out, and welded the new ones in with the sheet metal overlapping by about 1/2 to 3/4 of an inch. I started by using a borrowed wire feed welder. The welder had some problems and caused burn through as I could not seem to control the heat. I went out and purchase a wire feed MIG welder and finished the job with no more burn through although I now have holes that need to be repaired. Any ideas on how to best repair this? I have about 6 - 8 holes that range between 1/4 to 3/8 of an inch. I canít really cut the whole thing out and replace it as it is located at the front of the floor pan where it connects to the fire wall.
Any input would be appreciated.