[R-390] front panel corrosion

[Barry Hauser]

Hi Brian

What you need to do exactly depends on how deep the corrosion has cut into
them.  In any event, it's under the paint, so the panels need to be stripped
first with paint stripper and cleaned up with an abrasive pad, like
Scotchbrite.  If the pitting is deep, you'll have to excavate with a sharp
tool or at least a wire brush in those spots and fill the pits with
something like auto body putty or "liquid aluminum" or some epoxy based
stuff.  Then sand down the whole thing smooth.  Apply alum-prep or used
self-etching primer and your choice of finish coats - e.g. Rustoleum Smoke
Grey.

If the pitting is close to the stampings, that will be difficult to fix
completely.

Some of  that corrosion may just be under the paint and not too deep, but
I've seen it go nearly all the way through the panel on some.  (Started
scraping and experienced the "China Syndrome")   If they're that bad, you
are better off getting used panels that are in better shape and refinishing
those, if needed.

Attempting to neutralize and seal over the corrosion is not likely to work.
If it's minor, and you're not up to doing the full refinishing routine, you
might just try some WD-40 on a rag.  I've done that -- seems to help, but
I'm not sure how effective it is long term.

Barry



----- Original Message ----- 
From: <doorbar61 at tiscali.co.uk>
To: <r-390 at mailman.qth.net>
Sent: Sunday, July 04, 2004 6:36 PM
Subject: [R-390] front panel corrosion


have 390a and sp600 and i want to repaint the front panels, problem is they
are both corroding, can anything be done to halt the corroding, like washing
them in a particuler fluid or sealing the surface or anything else. many
thanks brian

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