[sdiy] Coating aluminum

[David G. Dixon]

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?