For now since silver is the only flashlight-suitable material offered for 3D printing i'm going to have a bit of fun with it anyway.
An ozidised layer on silver is easily removed with dilute hydrochloric acid and silver can be plated with gold to give improved oxidation protection. No metal is perfect but i'm looking forward to exploiting silvers beneficial properties in this field.
One of the properties of silver is it's high density which when incorporated into a small-ish light gives a nice positive feel to it and means it's effective when thrown at people who annoy you.
Very Very Cool!