[Jewelry making - Article 00179] - Re: [Orchid] Investment inside casting pieces

[Roger Bowersox]

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

    Sounds like you have a case of spalling. Has happened to me a few
    times when I did pieces with large surface areas (6 to 10 ounce
    cast containers). Have not had it with jewelry. 

    Try using distilled water for mixing the investment. I have been
    using distilled water when I cast the larger pieces since I found
    out about it and I have not had problem, but then it did not happen
    every time with non-distilled water. 

    Check the description of spalling on page 5 of this article by Eddie
    Bell. 

    www.gold.org/discover/sci_indu/GTech/2001_31/BELL.PDF
____________________________________________________________________
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
____________________________________________________________________