Deve -
Because an Epoxy Primer is so darn hard it is difficult to sand but it
is sandable. They also usually are slightly less flat. Both the
hardness and the sheen are part of what gives an epoxy primer it's
excellent corrosion resistance. (Besides the epoxy resin) I would use
the SW self etching primer/filler product for the first and subsequent
coats to fill the metal surface and then follow up with the epoxy
primer. You could also check with SW or PPG and see if they make an
epoxy primer that is easier to sand. Be careful when the label says
"epoxy" because sometimes it is just "epoxy modified" primer which is
less costly but inferior to true epoxy primers. Also there are both one
package and two package (with catalyst) epoxy primer systems.
If anybody has hands on experience using these products it is you, Deve.
Tom
Tom Poterack
Moline, IL.
'49 Chevy Pickup Retro Rod
http://www.chevytrucks.org/users/wayne/tom49.jpg
http://www.chevytrucks.org/users/wayne/tom49side1.jpg
http://www.chevytrucks.org/users/wayne/tom49grill.jpg
http://www.chevytrucks.org/users/wayne/tom49tailgate.jpg
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Message-ID: <000c01c07c4b$bf478260$83c75e18@KSCABLE.com>
From: "Deve Krehbiel" <dkrehbiel@kscable.com>
To: <Tom3600@webtv.net>, "tcape" <tcape@weblnk.net>
Cc: <oletrucks@autox.team.net>
References: <20673-3A5D1E93-485@storefull-248.iap.bryant.webtv.net>
Subject: Re: [oletrucks] Paint info
Date: Thu, 11 Jan 2001 21:57:12 -0600
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Reply-To: "Deve Krehbiel" <dkrehbiel@kscable.com>
In doing my research and relying on Tom here for a lot of questions I have
had on my 50 frame-up project, I ran across a really nice product from
Sherwin Williams called self etching primer/filler. Has the etchant
qualities yet is also sandable and builds on the surface allowing you to
really get a smooth finish before applying epoxy primer. My question is,
epoxy primer isnt normally sandable (from what I understand) and this seems
like a bad thing since its recommended after the etching primer. Is there an
epoxy primer that IS sandable before applying the urethane top coats?
Deve Krehbiel
Hesston, Kansas
1950 3100 * 1949 3600 * 1948 4400 * 50 3100
www.speedprint.com/Deves50/index.html
----- Original Message -----
From: <Tom3600@webtv.net>
To: "tcape" <tcape@weblnk.net>
Cc: <oletrucks@autox.team.net>
Sent: Wednesday, January 10, 2001 8:46 PM
Subject: Re: [oletrucks] Paint info
> Tom -
>
> A self etching primer is one that contains acid that will help to etch
> the bare metal and promote adhesion. It is only needed on bare steel or
> other uncoated metal surfaces. When a vehicle is produced at the
> factory the bare metal parts are run through a "washer" which not only
> cleans but puts on a phosphate coating which etches and promotes
> adhesion of the primer and aids in corrosion prevention. A self etching
> primer is an attempt to duplicate this metal treatment for use by us
> shade tree mechanics and garage painters.
> It is probably the best primer for use on bare metal first coat but will
> not give you much film build or fill qualities because it is usually
> applied in a thin film and should not be sanded after application in
> most cases.
>
> Tom
>
>
> Tom Poterack
> Moline, IL.
> '49 Chevy Pickup Retro Rod
> http://www.chevytrucks.org/users/wayne/tom49.jpg
> http://www.chevytrucks.org/users/wayne/tom49side1.jpg
> http://www.chevytrucks.org/users/wayne/tom49grill.jpg
> http://www.chevytrucks.org/users/wayne/tom49tailgate.jpg
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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