| Its Me again,
One more thing you might try that you will have handy around the house would be acetone, ask your wife if she will let you borrow her nail polish remover.
Another household item you will have that works on copper (not so sure about brass, but since brass is a copper alloy it might work) is lemon juice, I know it cleans both copper pennies and zinc pennies here in the states.
hope these idea help,
Greg
ps, you will either have the worst smelling undercarriage for your train or the best depending on which of the above you use lol. |