I tried using the Spaz Stix system that worked well on my dash bezel.
It wasn't a total disaster, but I could choose to call it that.
The idea is to get a gloss black undercoat, then spray the thin metallic layer on top.
The gloss black fought back. I first scotchbrited it all, then wiped it down with wax remover. The Spaz Stix gloss black would not wet out evenly. So I removed it all with lacquer thinner and tried again with a Rustoleum gloss black.
Same behavior. For some reason, neither enamel wanted to wet. It looked rough... maybe something to do with the residual aluminum being spotty? I got a few runs from trying too hard to get it to level.
I didn't try again, left the runs, and just did the chrome spray on top of the not so perfect black.
Not my best work. Not anyone's best work. But it will probably reflect just fine.
White or chrome paint would have been easier, even if it didn't wet out any better. Maybe a plastic adhesion promoter or epoxy primer would have been worth the effort?
Mike