[Jewelry making - Article 00082] - Re: [Orchid] Sapphires and Casting

[Gerald]

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    Setting C.Z's is quite a common thing up here North of the 49th
    Parrallel (Canada) there are a few things you gotta watch out for
    while casting cz's. Don't let the little thingees touch while in the
    wax stage, why? the shrinkage will have them either touch and
    splinter or just turn into dust. CZ's do take the heat. Look into
    buying the better and stronger style of stones, askthe supplier if he
    would suggest a stone just for wax-gold-casting remember, DON'T LET
    THEM TOUCH..... AT ALL TIMES! Its the gold shrinkage that ruins your
    fine setting not necessarily, the heat!!!!! The Aqua, or Memeory Wax
    allows the stone to be inserted and the wax claws will expand and
    return to their shape after the stone is set. Now then,... after the
    casting, if you want to remove the fractured stone, a slight
    explosion occurs and splinters of cz can be felt escaping and hitting
     your eyes/face. I've seen this many, many times. I only wear glasses
    while doing this. The sudden hitting of the hammer to release this
    stone is at best, dangerous. Of course don't water quench the hot
    crucible. just a normal cooling will suffice. "Gerry, the
    cyber-setter !" "www.gemzdiamondsetting.com" gemz AT ican.net 

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