You may be right on the mix up with Chassis Black. POR-15 is not thick unless
moisture gets to it. Even then it will still harden up, much harder than paint.
I have never used the silver but it doesn't sound very good if the rust bleeds
through. Maybe two coats would have been better.
Vic W.
Nolan Penney wrote:
>
> It's odd to me the failures I and others have had with it. Myself, as soon
>as I opened
> the can I was concerned because the stuff is so thick. Thick materials don't
>soak in
> and bond with surface rust, they just can't. To work with rust, the
>materials got to be
> thin. So I wasn't terribly surprised when I could lift it right off the
>rusty metal. Yes,
> the rusty metal was wire brushed down to solid rust (if there really is such
>a thing), and
> cleaned well. I also tried it over bare steel (better results), painted
>surfaces (horrible
> results) and flaky rust.
>
> I've come to recently suspect though that the company mislabled cans. My
>POR-15
> never cured hard, it stayed flexible. POR-15 isn't supposed to do that, it's
>supposed
> to become very hard. The company now has a section of their web site
>dedicated to
> giving warnings about the mistake of using their chassis black instead of
>their POR-15,
> with the resulting problems being described exactly as I encountered with
>the black
> POR-15. Seems to me a backhanded way of admitting they screwed up a whole
>bunch
> of cans of POR-15 by dumping chassis black paint into them and selling them to
> customers as POR-15...maybe.
>
> The others I know who had failures almost all used the silver paint. Now
>they didn't
> have it peel off like I did, it just bled and burst through with rust, like
>if you sprayed
> generic primer over rusty metal. It looks like, and acts like, cheap silver
>paint.
>
> >>> Vic Whitmore <vicwhit@home.com> 09/13 4:47 PM >>>
>
> I must admit, Nolan, that I did not use POR-15 on rusty surfaces. All my rusty
> surfaces were cleaned to bare metal as best as possible, thoroughly washed in
> Castrol Superclean, rinsed in very hot water, and then air dried. This left a
> dull finish that took the POR-15 very well.
>
> I have never had a problem of peeling or chipping. POR-15 has been on my upper
> and lower A-arms, sway bar, front brake dust shield, and wheel spindles for 2
> years. Am I just lucky, or was it good preparation? I think it was the prep.
>
> I have no interest in the company, nor sell the stuff, but I will continue to
> use it in the future.
>
> So there you have it folks... some like it and some don't.
>
> Vic Whitmore
> 76 Spitfire
> Thornhill, Ontario
>
> Nolan Penney wrote:
> >
> > Best of luck to you. I thought the stuff was garbage, as has every person
>I've
> > ever met face to face who's used it. No penetration through the rust so it
> > does not bond worth a darn. You can peel it right back off, and admire
> > the rusty surface underneath. The silver lets rust bleed right through.
> > Great waste of money.
> >
> > >>> Robert Gunther <rjgunthe@bellatlantic.net> 09/13 10:18 AM >>>
> >
> > Anyone have any experience using POR15 on surface rust??
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