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Re: Paint & Primer Questions Posted by DougM [Email]  (#211)  [Profile/Gallery]
(more from DougM) on Sat, 13 Nov 2004 15:32:36
In Reply to: Paint & Primer Questions, Brian, Sat, 13 Nov 2004 10:41:46 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Self-etching primer(acid primer) is similar to the e-coat that alot of manufactures use. It provides great corrosion resistance when used on bare metal. One draw back to some brands of this primer is it is not compatible with body fillers, meaning you can't apply filler over the top of it.
Personally, the epoxy primers now-a-days are alot better to use for bare metal applications, and fillers can be used under, or on top of an epoxy. Epoxies are generally non-sandable, and should be used more for a bare metal sealer. They can be wet sanded, but dry sanding will just gum up the paper. There is some debate on whether to do your filler work before or after using the epoxy....I don't think it really matters, but I would do the filler work first, then epoxy the whole car....then use urethane primer to block the car flat>> urethane primers are excellent when used for high build(body work areas), and sand really easy.
A 400 or 600 grit wet should be used at minimum before applying paint.
PPG makes a great urethane paint(DCC) for solid colors. No clearcoat is needed when using this system.
HVLP is the gun to use if you want to cut down on over spray and wasted paint, but a conventional gun will work just fine. Practice on door jambs or other small areas before attempting to spray large areas. Three coats of paint should be plenty enough to work with since you plan on sanding and buffing
Wet sanding(color sanding) after painting will also probably be needed to remove dirt, runs, or orange peal. If you have runs, you will probably want to knock the bulk of it down with 600, then move on to 1200, 1500, 2000, or even 2500. The finer grit you finish with, the easier it will be to buff out. One important tip> when sanding or buffing > STAY AWAY from edges.....they will be the first places to cut through to the primer, so just stay away.
posted by 69.174.101...
, Sat, 13 Nov 2004 15:32:36 <-- Viewing This Message, Tue, 16 Nov 2004 17:39:21, Sun, 14 Nov 2004 07:27:23, Sun, 14 Nov 2004 13:13:27, Sat, 13 Nov 2004 16:03:25, Sun, 14 Nov 2004 13:09:37
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