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Mazda Exterior \  dealing with rust?

dealing with rust?

Mazda Exterior Mazda Tech
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replies 10
following 5
 
greenguy83   +1y
So recently I welded in a roll pan and sprayed it with primer soon after. But now rust is starting to come to the surface. What do I do? Should I use rustoleum, bulldog, self-etching primer, or normal car paint for primer? Or should I use a combination of these? Thanks for the input.
roach25681   +1y
Epoxy primer. If you dont use epoxy over it, it will rust sooner or later. You can just sand all the regular primer back off, and epoxy it, then you can do your bodywork over the epoxy and reprime with with whatever you used before.
phatkix   +1y
quik fix would be to get a can of plastikote rust-not or trem clad rust paint, sand it off and re spray it.


not sure about the products you listed but rustoleom sounds like it might do the job lol.
roach25681   +1y
If you use anything out of the can, you'll have to sand it all back off and do what I said before you can paint it anyways. Might as well save the work.
pont   +1y


what he said if you have a compresser go to walmart and buy a cheap paint gun then go get some primer and sand it down then spary it with real primer but this is just a temp fix primer is not ment to be left exsposed long
limequat   +1y


Bondo will stick to epoxy?
phatkix   +1y
you have to sand anything you put on you ride.
roach25681   +1y
Limequat, yes bondo sticks to epoxy. You just have to scuff it up first.

Phatkix, theres a difference is sanding whats on there, and having to completely sand it all back off, and starting over. Which is what will have to be done before it ever gets any real paint.
greenguy83   +1y
I dont have a compressor, so i am kind of limited to caning it. But why would I have to sand off everything that came from a can on my truck, before it gets the final paint job? Is thier any decient can products that I wouldn't have to sand completley off before I got it painted? And to clairify previous replys to this topic, would I have to sand off all the rust (thier is quite a bit) before using the epoxy primer? or just the majority of it? and one last thing that I heard, can I just use paint in a can for primer? other than that thanks a lot for all the input!
roach25681   +1y
Yes you need to get off all the rust completely. Its just surface rust for now, so stop it before it goes any further. The reason you have to sand anything in a can completely off before a real paintjob is because there is nothing in a can worth a shit EXCEPT for a very small few things at the auto body supply stores. If you were to spray over it with rustoleum or even can primer from the parts store, then try to paint over that....it will never stick. It might last a day, might last two months. Either way you dont want that to happen. Since you have no compressor.......the only thing I can tell you to do is to try your hardest to find someone who does and will let you borrow it. Buy yourself a cheap gun and some epoxy and spray it. If there is no possible way at all you can do that, the last resort would be to go to the auto body supply store and they will have some self-etching primer in a can. But like I said, thats a last resort. Its a little better than anything from the parts store or Wal-Mart...but I still would NEVER trust it.