I've heard you can buy paint that makes it look rusty.. Does something to the metal meaning the surface rusts and then stops. You can then clearcoat to protect it. It may be safer than all the other suggestions as it's tried and tested..
@Sheffy started
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I've heard you can buy paint that makes it look rusty.. Does something to the metal meaning the surface rusts and then stops. You can then clearcoat to protect it. It may be safer than all the other suggestions as it's tried and tested..