some one should do a DIY on how to fix rust hole. thanks!

 

On my Cavalier.. I had rust in the rear panels.. (the entire paint was.. oxidized.. gone) so I sanded around the rust.. laid a piece of cardboard behind it and bondo-ed it.. It still looked funny.. but.. I'm not a fan of bondo unless done by someone more skilled. I have bondo on my fender on the Civic from a wreck and the guy.. did a horrible job! My friend had a Prelude that had a huge hole.. the guy welded a piece of metal to the car after cutting out the spot and then smoothed it out.