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Re: [Orchid] Rough surface on Sterling belt buckle casting  
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From: Jeff Demand
Date: Sat Jan 28 18:39:21 2006
 
     
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Ben,

    I have a box of investment which was stored in a humid basement for
    a few months, in theory tightly poly bagged. Your setting time and
    surface breakdown sounds all too familiar :-) Well the 'investment'
    is still good for patching walls. [remaining 23 pounds FREE to a good
    home for only shipping] 

    Your 1350 is on the high side, extra stress on the investment. I
    stop at 1250. If the buckle has a thick cross section try dropping
    the 850, maybe drastically. Flat surfaces are also a problem, if you
    make them slightly convex in wax, with the metal shrinkage they will
    come out almost flat (better to err with convex metal than concave) 

Jeff

Demand Designs
Analog/Digital Modelling & Goldsmithing
http://www.gmavt.net/~jdemand
jdemand AT gmavt.net

 
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