Date:         Fri, 11 May 2007 13:26:57 -0400
Reply-To:     Jason Willenbrock <pooncerelli@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jason Willenbrock <pooncerelli@HOTMAIL.COM>
Subject:      Re: Body filler onto primer/rust treatment paint?
Content-Type: text/plain; format=flowed

pros will tell you to use plastic body filler only on properly prepped bare
metal.  now, with that said, it doesn't mean that is how it is always done.
if you use plastic filler over primer you will run the risk of it dropping
out at a later date.  In my limited experience doing body work, i have only
used plastic body filler on bare metal, then primered.  Once i level my
primer, any low spots, pin holes etc..., i fill with polyester body filler.
Now, polyster body filler can be applied over primer, but only very thin
layers to level out slight imperfections, not dents.  Polyster body filler
sands extremley easy, which is why you only use a small amount. then shoot
on some more primer and level. There is a general rule of thumb out there,
and that is the harder it is to sand out, the more dureabilatey you can
expect.  For example, fiberglass body filler is far superior to plastic.  It
is more difficult to sand then plastic but will last much longer and is
resistant to moisture unlike plastic filler which will absorb moisture.
also you must primer over filler before top coat.  if you top coat directly
over filler, it will bleed through and you will not be happy.  i have also
heard that the solvents in paint can attack filler or vise versa, i have had
no experience there as i always primer over filler, seal, then top coat.
hope this helps
good luck
jason
87 syncro westy
so many roads to ease my soul...



>From: neil <musomuso@GMAIL.COM>
>Reply-To: neil <musomuso@GMAIL.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Body filler onto primer/rust treatment paint?
>Date: Fri, 11 May 2007 09:36:53 -0700
>
>Hi all.
>
>Am finishing up some body work. Repaired cracked body filler/surface
>rust on slider door and seam rust work on PS rear fender area. Even
>pounded out dents at fender well..... interesting!
>
>Will body filler (i.e. Bondo White/lightening) adhere properly to
>primer or rust treatment paint such as Tremclad?
>
>I don't mind leaving as is and just top coating with colour, but it
>wouldn't take much more work to "button it up" with some filler.
>
>Are there different types (easier or harder to sand) of body filler?
>
>The stuff I used ("Glass lite". I think was the name) set up quite
>hard. It is a "short strand fiberglass reinforced filler". In
>hindsight, I don't think it's correct for the application I used it
>for.
>
>Sorry for such elemantary questions. I will get my Haynes body work book
>soon!
>
>Neil.
>
>
>
>
>
>--
>Neil Nicholson. 1981 Air Cooled Westfalia.
>
>http://web.mac.com/tubaneil

_________________________________________________________________
More photos, more messages, more storage—get 2GB with Windows Live Hotmail.
http://imagine-windowslive.com/hotmail/?locale=en-us&ocid=TXT_TAGHM_migration_HM_mini_2G_0507