Gunpowder?
if your worried about salt rot don't be...
everything you need to beef it up (repair) is at
home depot...
i had a van that had full sharks mouth wide gaping hole's all the way around it ... on every door and on the sides too
all i did was take sheet metal
L - shaped for duct work ...and cut it to fit over the side panel bottoms first ....(dry fit) then i mounted it with self tapping hex head screws with a good bead of liquid nails panel adhesive in between
after the glue set up....on the following day
i grind off the hex head smooth so there's still like a rivet head (thickness) still left there ok... and then i scratch up the metal with an awl in grid fashion (tic tac toe)
then with a previous thin coat of bondo (resin based) on the surrounding car body above the sheet metal patch... and a thin coat applied to the sheet metal now all scratched up...
you can scratch that up before it dries too....(the Bondo layer)
and fiber glass cloth right to it and make it as strong as it was when brand new.
after you have fiber glass cloth there....you can add as many layers as you need and it finishes real up nice...... and solid
laugh at the salt
