How do we clean very dirty corroded solid brass casters? These people have a 1970 Yamaha grand and had dogs who were wetting on the casters. They look just awful. I once used muriatic acid on a spinet caster which I thought was solid brass. The caster was just plated and the acid ate off the plating in seconds. Is there some way of soaking off this awful urine stuff without a lot a labor? Sy Zabrocki
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