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Old 07-20-2009, 08:24 PM
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Pits bondo/glaze Primer Question

I just wanted to know what the best way was to fill in pits and then primer.....I have a section on the bottom side of the trunk that was severely rusted and I have sanded it down but it has pits that are to deep to sand out.Should I use a wire wheel to get it the best that I can then primer it with self etching primer "then" fill the pits in with bondo or glaze(depending on the severity of the pits)or should I wire wheel it then fill in the pits on bare metal and then put the primer over that?.....I thought I should primer before the glaze so it will seal the bare metal to help prevent rust but when I have tried this method in the past.....the filler just dissolved the primer and wiped it off......maybe after I wire wheel it I should use something that dissolves rust,or a rust inhibitor? then fill it with bondo then primer?If so,what is a good rust inhibitor to use? any suggestions?
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GM
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Old 07-20-2009, 09:04 PM
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if it was mine , like i did on my 68 cougar. wire wheel it clean, shoot it with epoxy primer, then depending on how deep the pits are use dolphin glaze to smooth it up , followed by a filler primer. i used all kirker paint products on my car and so far very pleased.
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Old 07-20-2009, 11:52 PM
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Would the epoxy primer inhibit any little bit of rust that you may have missed?
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Old 07-21-2009, 06:56 AM
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yes the epoxy primer will seal the metal.
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Old 07-21-2009, 10:07 AM
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Be very careful leaving rust in the bottom of those pits--it could cause you problems in the future even with epoxy.

Unfortunately, the only way I've found to be sure you're getting all the rust is to sandblast. So, it's kind of a risk/reward calculation.

Make sure you scuff the epoxy before laying down the filler. Also, if you have a lot to do, I find thinning regular filler works pretty well.

Good luck!
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Old 07-22-2009, 05:57 PM
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What about using Klean Strip's rust converter on the rust left in the bottom of the pits? Is this stuff any good.....it says it turns rust into primer....SO, does that mean after you apply it and it dries,you can paint it? Actually......How does this stuff really work or whats the proper way to use it?
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GM
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Old 07-22-2009, 06:43 PM
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you can use metal to metal body filler on that. Afterwards go on with good 2 part filler primer like PPG K36
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Old 07-22-2009, 07:17 PM
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don't use a rust converter . clean as much of the rust off as possible. seal the metal with a good epoxy primer and paint. the only true way to beat rust is to cut it out and replace with good metal. other wise you can fix it now and then fix what could be a worse problem later.
but in the end its your project , you know your skills , your budget and what you need to do to sleep peaceful at night with out staying awake listening to rust eat your car.
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Old 07-22-2009, 07:53 PM
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O.K.,NO rust converter Check.
Sand and wire wheel, Check
and seal with good epoxy primer Check
I may be seeing a sandblaster in my near future but for now its sand paper and wire wheel.What is a good epoxy primer to use? I know PPG make good stuff but I dont want to limit my options to picking one because they are the most expensive.....I would rather pay for the quality of a product rather than just its name on it....
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Old 07-23-2009, 06:03 PM
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iam useing kirker products on my 68 cougar and have found them to work great so far and reasonable priced. i got them through auto body tool mart online.
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Old 07-23-2009, 10:40 PM
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Thank you guys for all the posts....I appreciate the tips
Now what would be a good spray gun to use with epoxy primer?
I was thinking about getting a hvlp so I can try my hand at painting later,with the primer being thicker I have read people using 2 different guns, one with a bigger nozzles for the primer .....is it possible to use the same gun for both and get different sized needle/nozzle for each(paint/primer)? or better to buy 2 different ones?
Thanks again
GM
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Old 07-24-2009, 04:19 PM
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O.K., I found this http://www.finishsystems.com/qanda.html
Its like a little beginners guide for..................UM, beginners
Thanks
GM
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