[Jewelry making - Article 00368] - [Orchid] Old nitric

[Len & Judy Bjorkman]

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


    In my experience, when nitric acid gets "tired" and seems less
    chemically active in etching,  it sometimes can be helped along by
    very GENTLE heating.  I use one of those heating trays for keeping
    food warm at the table (often available at second-hand stores -- buy
    only the kind that has a little knob for "High-Low-Off" and only use
    Low;  I etch in a Pyrex dish).  Do NOT under any circumstances allow
    the acid to boil!!! Keep your eye on the acid -- it sometimes seems
    to have a mind of its own, in terms of activity.  Usual
    disclaimers... Judy Bjorkman 



____________________________________________________________________
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
____________________________________________________________________