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Old 03-11-2009, 10:50 AM
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Originally Posted by Fast Eddie D
Pinholes are bad, bro. Once rust hs pinholes it's almost guaranteed to come back again and again.

If you must fill them, you have to use something impervious to water. You might try POR-15 2 part epoxy filler, which cures hard as a rock and waterproof, or even (GASP!) POR-15 "spot putty", which is thick POR-15 in a tube. And definately do something about the back of the panel.
The OP may be speaking of pin holes in the filler or primer,and may not be rust pin holes.I'm in the process of shooting primer and block sanding a 68 Camaro now,I use the Evercoat Glaze that is a 2 part to fill the pin holes and it works great. Mix up a little,Quick swip over the hole,{just enough to fill the hole and not have a bunch all around it},Smooth it out. But I do still have 1 more coat of primer to spray.
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