Originally Posted by Scoop
vinegar will tarnish brass.
lemon juice and baking soda is safe.
um vinegar will remove tarnish, it is an acid (weak but still an acid) so it will etch it clean. any resulting tarnish is from removing any oil/dirt that was protecting the brass before hand. also when it comes down to it, you want a light layer of corrosion (patina) because it ends up protecting the metal when you talk about ideal