I'm just researching rust repairs as well. One way to go about things is to cut out the rusted area and use industrial body adhesive to bond new metal parts in place. This is better than welding because you do not warp things and most people do not have welders. Replacing the metal assumes that you can find appropriate metal panels. I haven't been able to find a quarter panel....
Second way is to grind back to unrusted metal and apply something like naval jelly to the rust once you have removed all the loose rust. This will stop the rust. This is what I'm doing. Over the now stopped rust, I'll put fibreglass mat and the fill with "evercoat" shortglass body filler. I hope it works.
If you have many holes all over the car, you might just want to find a better body and start fresh. Mine has three areas of concern so I'll be able to fix it.
For more info, just do some internet searches for automotive rust repair. That's what I did and I found a wealth of info. If you are in Germany, I'm sure you will find some German sites for repairs as well. I don't think rust is a North American only problem!
I visited Germany in 2007 and I'd like to go back. Loved all the pastries in the mornings.
I patched one hole with fibreglass and then I added a layer of the Evercoat stuff. I think that will work. I also made my own rockerpanel out of 14 ga aluminum. I couldn't find any replacements. I just hammered it to the shape I wanted and bonded it to the remaining good metal. I had to do it twice as the bonding stuff appears not to have mixed properly in the mixing tube. This time I just mixed the two components together myself. It appears that it is working now.
How is your repair coming along?
it's good to hear that your repair is going well...do you have any pics?
anyway, i bought some fiber paper?? and some epoxy, it's german stuff so i have no idea if it's the right thing or not...i'm going to give it a try tomorrow...it's been raining most of the week so i haven't got any time to let it dry.
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