Autosol (or other metal polish) should bring it up - but if not coated it will slowly tarnish again over time.
cheers,and what could i coat it with?
what could i coat it with?
Most visible copper is allowed to tarnish as it's considered more aesthetically pleasing than freshly cut, but if you want fresh copper colour you just have to exclude air, so a clear lacquer of some sort.
@moocher started
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Autosol (or other metal polish) should bring it up - but if not coated it will slowly tarnish again over time.