I've cleaned a brass surround on a hole-in-the-wall fireplace and the advice on the internet suggests that acrylic urathane seems to be the best lacquer to apply to stop it re-tarnishing. In your experience could clear acrylic urathane also be used on brass.
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Answered by Karl Crowder, Crowder Painting from Colorado Springs, Colorado
I believe it can. Acrylic urethane seems to stick to everything it touches and they are well suited to this application. Make sure to check the label on the can and the manufactures website for recommendations.
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