In message <email@example.com>
"Badger" <firstname.lastname@example.org> wrote:
>> However you can as a temporary measure spray any old cellulose gloss
>> over the top before fitting the door, this at least will give some
>> protection and when your ready to start the job properly simply wipe
>> off the cellulose gloss and primer with cellulose thinners and start
>> from scratch.
>Yet landrover tell us that the standard black primer is actually a cathodic
>coating process that should not be removed under any circumstances, in fact
>all new panels come with a sticker to that effect. When I painted the new
>panels (bulkhead, wings and front doors) for my 110, all I did was flat the
>cathodic primer with scotchbrite, etch prime where any bare ally was
>showing, then epoxy primed and painted with 2-pack poly gloss. Seems to have
>worked ok, nothing untoward happening yet....
Of course that is absolutely correct if we're talking about panels that
have been through the cathodic coating process usually associated with
The cathodic coating provides a barrier from the environment for the
substrate, if the substrate is undermined by way of a scratch dent or
rub-through the corrosion process will rapidly accelerate especially at
these weak areas destroying the substrate as this then becomes the anode
and not the metal.
Most superfluous panels I've come across only have a works primer that
could easily be washed off in thinners, panels that have gone through
this cathodic process will not wash off in thinners as they have also
been subject to oven baking.
I forgot for a moment about OEM panels, I was referring to superfluous
panels that do not or have not necessarily gone through the same
cathodic treatment as the more expensive OEM panels tend to.
Please accept my apology as my post was misleading
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