[sdiy] Coating aluminum

James R. Coplin james at ticalun.net
Mon May 11 19:07:14 CEST 2009

If the Krylon Matte is oil based and not water based you probably will be
fine going right over it.  If it is water based, probably not.  You could
use a clear shellac spray to bridge the two if it is water based.  Clear
shellac will pretty much let you marry incompatible finishes as both water
and oil based will adhere to it and vice versa.

James R. Coplin

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of David G. Dixon
Sent: Monday, May 11, 2009 11:49 AM
To: 'synthdiy DIY'
Subject: RE: [sdiy] Coating aluminum

Thanks, guys, for all the hot tips.  I like the Varathane Polyurethane idea
because it comes in a spray can.  I'm not sure I care particularly about
yellowing.  As long as it still looks like metal and one can still read the
graphics, I don't really see the downside.

I'm just wondering, can I apply the polyurethane over the Krylon Matte
Finish I've already put on, or will I have to start over, reapply the
graphics, etc, etc?

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