That never worked very well for me. But I did discover something unexpected and magical about WD-40. About six years ago I noticed that a chromed head set was beginning to rust. It had a bunch of those tiny cancerous under-the-chrome blooms beginning. In my past experience, those are usually terminal. You can try to clean it up, remove the rust, polish it and wax it. But once it's begun it always seems like fighting a losing battle, as that nasty rust always returns. Anyway, I just grabbed the first thing handy, the WD, saturated a rag and started rubbing. It took a fair amount of elbow grease, but it actually knocked down all the little rust scabs and shined the chrome as well as a polish. I was surprised. I kept wiping until there was no visible WD film remaining. I never bothered to wax it, assuming it was just going to die in a few months anyway. I've kept an eye on it, expecting to see the inevitable return of the rust. But six years later, it's still perfect. And I've never re-treated it. I don't get it, but I aint complaining.