[Jewelry making - Article 00107] - Re: [Orchid] Wax Injection unfilling

[Ken Ferrell]

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    Do you have air vents going to the out side edge of the mold?? If
    not at the end of each prong make a thin cut not too deep towards the
    top of the mold, In lieu of that being feasible, just a very small
    drill like a 65 or so and at the end of the prong drill through the
    mold, what's happening is that air get trapped in the ends of the
    mold and won't let the wax in, Talc is OK just use it very sparingly.
    Especially if this is a silicone mold, I  borrowed a make up brush
    from my wife and use that to powder only the air vents. The talcum
    powder will slowly degrade the mold quality if used in large amounts
    but if used sparingly it's OK just don't try and use a silicone spray
    in the same mold. The other choice is a combo vacuum / injector Nice
    but about 2500.00 last I checked.  You will find that by cutting air
    release vents in molds that they will pull easier, you can also drop
    the wax temp a few degrees (less shrinkage) and also lower your
    injection pressure, Less parting lines and flash to clean off the
    model 

Good luck
Kenneth Ferrell
www.shadras.com  


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