| Re: [GMCnet] paint sticking problem ??? [message #163809 is a reply to message #163808] |
Thu, 22 March 2012 00:48   |
peter bailey
Messages: 367
Registered: March 2009
Location: Gawler, South Australia
Karma:
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Senior Member |
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Steve,
I spent years experimenting with different brands of etch for aluminium and
once I would find one that worked it would not be long and it would be
unobtainable so I would go through the process all over again. My use was
for aluminium sign extrusion and signs. The customers wanted colours and not
the anodised colours, the extrusions in a lot of cases had engraved plates
which were continually slid in and out of the extrusion (Door nameplates for
offices) the colour had to withstand this abuse. It was always the etch that
would not hold to the aluminium but there is, as I had found some good
products out there that will work but you need to be informed by someone who
has been through the process like myself. I can not give you a product name
to use that I know of as it would not be available in the USA. The American
POR may well have a product that would be suitable. Check to see if your
etch scratches off easily if not then you need to look at an undercoat that
will adhere to the etch and is suitable for your top coat.
Peter Bailey
from Ozy (Aussie)
----- Original Message -----
From: "steve & debbie" <zzdebz@yahoo.com>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, March 22, 2012 3:45 PM
Subject: [GMCnet] paint sticking problem ???
>
>
> Hello all,
>
> I am having a problem with spraying the toll windows..
> I cleaned the windows to bare metal, and then used a thinner to wipe any
> grease off the metal frame parts. Next using an etching primer allowing to
> dry for several days. Lastly using a black enamel spray. Leaving to dry
> for several days, i find i can easily scratch the paint right off !!!!. I
> have spent hours stripping the old paint off, cleaning, etc and i am
> getting nowhere on this. HELP why is this happening. The paint i am using
> is indicated to be correct for the task, for use on alum metalwork. The
> top coat is also correct for the undercoat. The undercoat is sticking with
> no problem. Once the black enamel is applied it seems to come off a little
> too easy, along with the black top layer ????
>
> cheers and beers
> --
> Steve & Debbie
> Monticello, FL
> 77 Palm Beach :- Aurora
> EX G4WDT
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> -----
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