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I have a model railway in which I use pure copper on the tracks and in the engine to power the train with electricity.

Is there any solution to prevent the copper surfaces from corrosion, and maybe improve the conductivity?

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Though I have not tried them DeoxIT products claim to do what you want, available as liquid and spray.

If anyone has used these, please add a comment as to effectiveness.

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  • $\begingroup$ It seems promising, but 7USD for 2ml just doen't worth it... $\endgroup$ – lszabi Jul 26 '15 at 9:56

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