[Jewelry making - Article 00452] - Re: [Orchid] PnP paper residue?

[Alma Rands]

========[ Invite a Friend - http://www.ganoksin.com/invite.htm  ]========

Hi Elaine.

    I don't know  what you have tried in your efforts to rid your copper
    of the black stuff. The procedure I follow after  etching with ferric
    Chloride is to  soak the etched piece in pure ammonia (some suggest
    diluting the ammonia, but I use  it undiluted). For this soaking I
    use a plastic container with a lid---helps control the fumes. After
    letting it soak for some time I  rinse it well.  Usually this takes
    care of any of the PNP residue. If there is anything still remaining
    I scrub the piece with either coarse steel  wool, a scotch bright
    scrub pad, or a steel bristle brush. So far this has taken care of
    any residue. Hope this helps. 

Alma

____________________________________________________________________
T h e   O r c h i d   L i s t
Open Electronic Forum for Jewelry Manufacturing Methods and Procedures
____________________________________________________________________
Orchid FAQ:
~ http://www.ganoksin.com/orchid/faq.htm
Orchid Archives:
~ http://www.ganoksin.com/orchid/archive
Orchid Galleries:
~ http://www.ganoksin.com/orchid/gallery.htm
Invite a Friend:
~ http://www.ganoksin.com/invite.htm
____________________________________________________________________
Tips From The Jeweler's Bench - Article Archive
~ http://www.ganoksin.com/borisat/tip_sear.htm
The Jeweler's Selected Bibliography List
~ http://www.ganoksin.com/jewelry-books
Buy Orchid Jewelry:
~ http://www.ganoksin.com/shop
____________________________________________________________________
-Unsubscribe:
-Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank
____________________________________________________________________