[sdiy] Panel Finish

[Scott]

Is there any long term problem w/ spraying bare aluminum w/ lacquer or poly?  I've been making panels by transferring an image  to the bare (silver) aluminum, then coating.   Will the aluminum still oxidize under the finish and cause trouble 10 or 20 years down the road?

thanks!   - still trying to work out the best diy method for panels!  (I used to (about 10 years ago now) use some translucent paper, glued on, then sprayed w/ poly.  That looked great until a few years later when the paper started absorbing moisture and expanding/wrinkling!  So far this toner transfer is working well)  Unfortunately I like black graphics on the bare metal.  I've found several people have posted great explanations for their methods of making professional looking black panels w/ white text, but not black text on silver.  The toner transfer does look good, but I have concerns about the longevity.

thanks again