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hydrochloric acid

  1. PE9ZZ

    Why won't nickel plating brass in HCl (hydrochloric acid) work?

    I got my lovely Pioneer SA-500A with two of the knobs having their shiny tops missing. Fortunately, this was already many years ago, I could get replacement tops on Feebay. However, they were brass and their color a pale yellow. Over time this darkened and it became ugly. So I decided I would...
    • PE9ZZ
    • Thread
    • acetate brass hydrochloric acid nickel plating
    • Replies: 3
    • Forum: Pioneer Audio
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