[Jewelry making - Article 00271] - Re: [Orchid] Vulcanized molds refuse to fill

[Kathy Johnson]

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>     Does anyone out there want to share their secrets for getting
>     molds to fill correctly? Sometimes I spend all day wax injecting
>     and don't get any wax models made. It is getting frustrating.

    I had a similar problem just yesterday. I had six very thin flat
    pieces all molded in Silastic silicone molds, and couldn't get any of
    them to fill. I tried everything that others had written about out
    here (VERY timely thread! thank you all!) but nothing worked. I
    wasted nearly an entire injection pot of wax trying different
    methods. I kept getting close, but not 100%. Finally I held the mold
    closed with two other Silastic molds instead of wood or metal sheets.
    That worked, because the other soft molds "gave" enough to allow the
    middle one to expand for filling, but held it together without
    pressing too tightly. But then the wax model wasn't evenly flat--it
    was wedge shaped because my hand pressure wasn't evenly distributed.
    So I put the three molds into one of those mold clamp tools and tried
    that, along with powdering all the air vent cuts heavily every single
    time I injected the mold. That worked perfectly, and I finally got
    acceptable models from all six molds.

Kathy Johnson
Feathered Gems Jewelry
http://www.fgemz.com
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