[Jewelry making - Article 00006] - [Orchid] Vent holes in rubber molds

[Andrew McIntyre]

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Good day

    I am new to mold making. I have a class style ring type that is
    produced from a rubber mold. I have inconsistent results in the wax
    mold that are produced - some good - but many rejects. I have no
    vent holes in the mold at the moment which maybe the reason from
    some of my problems. 

    How do I create these - with a small drill from the inside to the
    outside? How many vents? any position? 

    II don't have my own injector but I am looking at getting a new wax
    injector (hand pump) any recommendations? 

Andrew
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