HELP: Polishing brass

Discussion in 'Metalware' started by bluemoon, May 14, 2016.

  1. bluemoon

    bluemoon Member

    So I was polishing what I thought was a solid (gilded) piece of brass (a candelabra that I had patinated artificially but changed my mind and want it back the way it was. There was originally gilding there but it has worn off mostly) but then suddenly this copper-coloured area shows up in the middle of the brass part.

    Multiple areas have that going on... what is it and why?

    It's as if it was brass-plated copper and the brass had gotten worn through..
     
    KingofThings likes this.
  2. bluemoon

    bluemoon Member

    UPDATE:

    I scratched one of the coppery areas and underneath it seems to be brass again.. confusing.

    The polishing procedure is also impossible: I've used vinegar and salt but some of the parts simply don't respond to that very much at all.. other parts do. Some of them seem to get polished but after I've rinsed the piece, the polished parts start to turn and get quite a dark patina.

    HELP!!
     
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  3. bluemoon

    bluemoon Member

    Some of the pieces have now developed such a resistant patina that it doesn't come off. To make matters worse, I painted some of the candle cups with Liberon gold paint a while ago and it looks terrible. I can't get that off either.....
     
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  4. afantiques

    afantiques Well-Known Member

    The clock reapirers brass cleaner is a mixture of strong ammonia, liquid soap and boiling water. Use this outdoors and say upwind. It will shift the paint and most tarnish.
     
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  5. bluemoon

    bluemoon Member

    Where do I get ammonia?
     
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  6. daveydempsey

    daveydempsey Moderator Moderator

    To tarnish brass or copper I`ve used yellow sulphur (sulfur) powder.
    Bury it for 15 minutes in powder.
    An hour will turn a copper penny very dark.
    Experiment with the times.
     
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  7. daveydempsey

    daveydempsey Moderator Moderator

    You can buy household ammonia at a hardware store.
     
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  8. clutteredcloset49

    clutteredcloset49 Well-Known Member

    Grocery store in the cleaning aisle.

    NEVER EVER mix ammonia and bleach.


    Where oh where is our Brasso fiend?:eek::woot::nailbiting:
     
  9. clutteredcloset49

    clutteredcloset49 Well-Known Member

    Brass does turn a coppery color at times. It is part of the tarnish.

    I've never used vinegar and salt. I've used lemon and salt with good results. Guess it would be about the same thing.
     
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  10. KingofThings

    KingofThings 'Illiteracy is a terrible thing to waist' - MHH

    I don't think
    Brasso will solve this issue...
     
  11. Aquitaine

    Aquitaine Is What It IS! But NEVER BORED!

    You mean you can't buy Brasso any more???? Should I treasure what's under my sink?????
     
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  12. KingofThings

    KingofThings 'Illiteracy is a terrible thing to waist' - MHH

    No. It's still around but if you've got plating over plating over the base metal Brasso can't fix that. It should take the patina off though.
     
  13. daveydempsey

    daveydempsey Moderator Moderator

    NEVER EVER mix ammonia and bleach.
    Very true, it produces chlorine gas, very toxic.

    Where oh where is our Brasso fiend
    Banned from eBay boards by AM (redpix12) apparently he could do in a few weeks that many of us couldn`t in 2 years.
     
  14. springfld.arsenal

    springfld.arsenal Store: http://www.springfieldarsenal.net/

    Sounds like it is time for the spray paint can. I'd sure be there by this point. Gold colored spray paint has worked out well for us when a faux-brass finish is desired.
     
    KingofThings likes this.
  15. KingofThings

    KingofThings 'Illiteracy is a terrible thing to waist' - MHH

    I think MPC may make the best and shiniest spray paints.
    ~
    NEVER DULL was the other polish that wouldn't come to mind earlier.
    It is what we used and re-used in the USN.
     
  16. bluemoon

    bluemoon Member

    Plaster (powder form) seems to work quite well as a polishing tool.

    It's a bit slow and painful work thanks to all the complicated and sharp ornaments but I'll get there.
     
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  17. Shangas

    Shangas Underage Antiques Collector and Historian

    I've always polished my brass with Brasso, sometimes with a small scrumpet of superfine steel wool, to remove any really stubborn tarnish.

    Sometimes the only way to really do it properly is to get the Brasso directly on you, and rub it on with your hands. It's messy, but it's a much more thorough job.
     
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  18. Ownedbybear

    Ownedbybear Well-Known Member

    Stick it in a bucket of brown sauce and leave it for a while. Works fine.
     
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  19. KingofThings

    KingofThings 'Illiteracy is a terrible thing to waist' - MHH

    Nope........................not asking.......................................
    :wideyed::eek::vomit:
     
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