Even sanding won't remove all of the rust.  Only glass beading the spots,
or a chemical applied to the rust will get every molecule of rust either
removed or converted.  You have to get down to the bottom of the rust pits;
sanding alone cannot reach that deeply without removing a major thickness of
the metal.

Mike B.

----- Original Message -----
From: "John C..." <Trvlr2001@COMCAST.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, March 21, 2008 1:37 PM
Subject: Re: POR Patch as a seam sealer?

>I guess this was my point....
> Rust cannot be "fixed" from the outside.... or .... the inside.
> It lies on the 1/2" or so flange...
> In the middle.
> Yes, you can stop the problem that caused it in the first place.
> The influx of water from inside plumbing from the water tank, tubing, sink
> etc.
> You can reseal the windows, the Camper Outlets, whatever.
> You can spray the rust oxidating compounds,
> and hope they penetrate as deeply as possible. ( wouldnt count on that
> 100% )
> But the rust Is Still there,
> No matter what, until the seam is seperated and sanded, cleaned,  prepped
> and re-sealed.
> YMMV
> JC...
>
> -------------- Original message --------------
> From: JordanVw@AOL.COM
>
>> In a message dated 3/20/08 6:40:04 PM Eastern Standard Time,
>> greenvanagon@GMAIL.COM writes:
>>
>>
>> > Has anybody used POR Patch as a seam sealer?
>> > http://www.imperialrestoration.com/products.php?category=8#18
>> >
>> >
>>
>> if you smear this stuff on your outside seams without fixing the real
>> problem
>> - the point of entry of dirt and water on your seams from behind - then
>> it
>> will only conceal the rust eating the metal away and when you finally do
>> see
>> the damage it will be alot worse.
>>
>> dont mask the problem. fix it from behind.
>>
>>
>> **************
>> Create a Home
>> Theater Like the Pros. Watch the video on AOL Home.
>>
>> (http://home.aol.com/diy/
>> home-improvement-eric-stromer?video=15?ncid=aolhom00030
>> 000000001)