I have dealt with similar situation, deep crease, edges not moved due to reinforcement. I used a cutoff wheel and sliced right down middle of "valley" thus removing material to account for stretching. I managed to get a 4-40 stovebolt through the slice with a few washers on inside of door. Screwed into handle and gently pulled metal, slide along the valley, pull some more, etc.
Removed bolt, copper backer stitch MIG welded the slice shut.
It's not fast, lots of patience, but worked for me.
I really liked bartamos nail welding, very wise and inexpensive.
Last edited by Mikeybakken; 07/02/2013 9:47 AM.
