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Username Post: Putting body filler over PPG DPLF Epoxy Primer?        (Topic#130879)
Cartman1 
Member
Posts: 6

Loc: WA
Reg: 04-01-06
05-05-06 10:52 AM - Post#929714    

I primed my 58 impala with PPG DPLF epoxy primer last September. I am now ready to start the body filler work. I will be using Evercoat Rage Xtreme. I was told I needed to apply another coat of primer before using the Evercoat because it had been longer than 7 days. Do I have to do this?? Or can I just ruff up the primer and apply the Evercoat?? Or do I need to do something else?? If I have to spray a new coat of primer every 7 days I will have 50 coats of primer on my car by the time I get done. But I want to do it the right way! Help!
Cartman

 
dukeofbluz 
Senior Member
Posts: 883
dukeofbluz
Loc: IL
Reg: 12-15-03
Re: Putting body filler over PPG DPLF Epoxy Primer?
05-05-06 11:47 AM - Post#929715    
    In response to Cartman1

I have always scuffed it up with a scotch brite pad, never had any problems and ive waited months.

Jeffrey
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Rick_L 
Honored Member
Posts: 25839

Loc: Katy, Tx, USA
Reg: 07-06-00
Re: Putting body filler over PPG DPLF Epoxy Primer?
05-05-06 12:16 PM - Post#929716    
    In response to Cartman1

If you go by PPG's p-sheet, you need to re-shoot with DPLF after scuffing it if it's gone past the 7 day window, no matter what you're putting on top of it.

One way around that would be to sand the primer back to bare metal only on the areas that you are going to bodywork immediately. Put your filler on and finish it, then primer only that area with DPLF. Then within the 7 day window, shoot some 2k primer surfacer. Then move on to the next panel.

Regardless of how you go about this, you really only need to shoot one more coat not several, just do it a panel at a time.

I really don't have a big problem with sanding epoxy that's over 7 days old then applying 2k primer over it. But I don't think I'd chance putting filler on it. A lot of experienced guys won't put filler over epoxy ever.

 
brad_bb 
Valued Contributor
Posts: 4255
brad_bb
Loc: Joliet, IL.
Reg: 07-13-01
Re: Putting body filler over PPG DPLF Epoxy Primer?
05-06-06 06:45 PM - Post#929717    
    In response to Cartman1

You'll find there are two schools of thought on Chevytalk. One is applying filler on top of Epoxy primer, the other is applying it to bare metal. I'm of the latter school because that's how I've been doing to forever. I would not be averse to applying it over the epoxy so long as you rough up the surface to give a sufficient mechanical surface for bonding.
If someone else can design it, I sure as heck can figure out how to fix it!


 
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