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Old 03-30-2005, 09:03 PM
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E Coat?????

Can you guys help me out here ? Someone told me e coat is the primer that comes on most or all new sheetmetal (the black stuff) . PPg rec. shooting dp401lf to" unsanded " e coat . I have always buzzed the black stuff down real good, primed or sealed and primed . I'V been told you can run into problems if you break through this stuff.

Help me out here,I'm getting ready to start on a bunch of new panels.

thanks Dave

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Old 03-30-2005, 09:19 PM
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First of all make sure you have ecoat on the panels, some panels are ecoated and others aren't with just a basic primer applied. Saturate a rag with laquer thinner and rub the coating to see if the stuff loosens up. Ecoating will not be affected by the thinner, other primers will soften up and sometimes wash off. If the panels aren't ecoated remove the primer completely by sanding with 120 or 180. If they are ecoated just scuff them with a red scotchbrite and apply your epoxy. The scotchbrite shouldn't cause many cut throughs. Minor cut throughs aren't any problem IMO, epoxy can be applied to bare steel directly if sanded.
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Old 03-31-2005, 07:47 AM
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Thanks Badbob, can you give me a heads up as to wich mfgs use e coat on their new parts (gm/ford/ after mkt) and is it black?

thanks again Dave
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Old 03-31-2005, 08:30 PM
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Got more answers on PPGs website. Baked electrocoat primer ,great corrosion resistance .Looks like the same stuff I been seeing for years. I just never heared the term e coat and a painter at a local shop told me never to sand through it or lifting might occur at the edge.
Also sanding is optional if covering with dp epoxy. Thats not for me I like to sand .

Thanks again Dave
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Old 03-31-2005, 09:04 PM
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If it is a true e-coat you do not have to scuff/sand anything that is NOT exposed to sunlight. ALL exterior parts MUST BE SCUFFED/SANDED!!!!!!! If it sees the sun you must at least scuff it period.
I personally have never seen or heard of a true e-coat lifting. Breaking through the coating means that you now have to treat the bare metal by manufactures specs. True e-coat provides excellent adhesion and corrosion resistance.
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