Re: tips on painting fiberglass hood

From: Bob Tom (tigers@bserv.com)
Date: Thu Jul 11 2002 - 07:40:02 EDT


At 01:28 AM 7/11/02 -0400, you wrote:
>I'm not certified in body repair/ painting, but those sandpaper grits are a
>bit low (grit) don't you think? If the hood has any major blemishes I would
>start with 150/180 then work my way up (finer grit). That should take any
>of the blemishes out of the fiberglass. You may have to use some putty (I
>can't remember the name...I think it's two part putty) for the little
>blemishes or some fiberglass resin for the bigger problem areas. Bondo
>works well too as long as it's applied correctly...bondo only sticks to
>three things...factory baked paint, epoxy primer and plastic. Start with
>skim coats and apply any further coats as needed. You will need to apply it
>so that it is actually higher than the surface of the hood because you will
>be sanding it down...(obviously). You should finish with 400 or 600 grit
>paper for final sanding. Your best bet is to use a can of black aerosol
>paint and spray a fine mist over the entire hood and then sand with 400
>grit paper to make sure the hood is level before painting...that way you
>will know where you will need to apply plastic to make it uniform...add more
>plastic as needed. Then apply the paint and clear coat, then wet sand with
>2,000 grit paper followed by buffing with coarse rubbing compound followed
>by fine rubbing compound and you should be set...considering that you don't
>have any fish eyes or orange peel...if I'm wrong then please someone correct
>me...it's been a few years since I've gone through autobody repair
>school....I have no problem admitting I'm wrong...this is to the best of my
>recollection...I just don't want another DML'er messing up something so
>noticeable as a hood or other body part! Make sure that you clean the hood
>after each sanding with an air gun and a suitable cleaner (alcohol) before
>you begin the next step...especially before paint. Use a tack cloth after
>the final cleaning to make sure you have removed all particles from sanding
>and also finger prints...bad juju for paint! Eric Jerman

Sounds good, Eric. Your numbers have jogged my fading mem cells.
We used 180 to take out the major blemishes on a fiberglass bumper
cover. My son's experience has been that 600 grit (wet) 'might' show fine
sand scratches if using base/clear coat paint so he uses 400 grit (wet).
He finds 600 wet is no problem if using acrylic enamel. Does that sound
about right to you?

Bob



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