Originally Posted by
Gary Lewis
They make cab corners just for that purpose. Try LMC.
As for fiberglass Bondo, if the metal is clean, and I mean CLEAN, it will stick. But, if you don't treat the edges of the metal or, preferably, take out all of the rust, the tin worm will keep working and, eventually, the Bondo will fall out. You would be best to clean it up as best you can, paint it with something like POR15, which will convert the rust, and then put your Bondo in.
Thanks. I tried LMC, which I had never been to, and couldn't open their online catalog because of a server error or something. I will look into the "replacement" corners before trying the bondo, but will keep that option open.