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Unread 08-14-2013, 07:32 PM   #17
3quarter32
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Kind of hard to answer, as many variables are involved. If you are planning on driving the car in primer for a while, it should be sealed to keep contaminates such as road oils, and fuels. bird dropping, etc. from soaking into the primer. Even oils from your hands can be left in primer. Water will also penetrate primer and cause rust issues if over metal. Epoxy primers need not be sealed, but are the pits to sand before color is applied.
I use a primer/sealer right from the start, but never drive in primer before the final finish is applied. I have done a bit of pit and scratch filling, and covered with rattle can primer. This will be removed before actual primer process begins.
Lee
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