CNKS
03-10-2004 08:14:17
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Re: priming parts in reply to Tom South jersey, 03-10-2004 04:58:49
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To clarify slightly -- If you are priming small parts, and leaving them for days, weeks or months, and you cannot keep them in an absolutely dry place, the only primer that will prevent rust is an epoxy primer, usually applied with a spray gun. I don't know if there are epoxy primers in spray cans or not. If you use spray can primer, or any primer from a gun that is not epoxy, you may have problems (emphasis on the may, see Rustyfarmall's post), as such primers are not waterproof. Spray gun epoxy primer can be applied and left alone. However, before topcoating, it must be scuffed and applied again. I don't do it that way, but apply a rust preventative on clean metal (Picklex 20), then use epoxy within a couple of days of topcoating. Again all of this is on the paint and bodywork forum. I believe most epoxy primers are compatible with most anything, but, as Dave_ID said, you should use the same brand of paint throughout, that way there will be no surprises. I only use spray cans (reluctantly) for touch up work, or on some small part that I messed up and don't want to load my spray gun.
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