How can i get a high gloss metallic chrome finish on my arts project?

I need to add a protective sealer, but so far everything I've used dulls metallic finishes. Is there a way around this?How can i get a high gloss metallic chrome finish on my arts project?
Anything you spray on it will dull. I'd suggest treating it like silver and use a tarnish preventative buffing cloth.How can i get a high gloss metallic chrome finish on my arts project?
You make metals shine by polishing. There are coatings that will help preserve a shine some, but it must already be polished to a shine to start with.

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