[Jewelry making - Article 00070] - Re: [Orchid] Vent holes in rubber molds

[Phillip]

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Hello Andrew,

    I use a knife and the vents don't reach the end. I wouldn't try
    drilling it. You don't need to. The slits you make allow you to take
    the wax out more easily as well as allow air to escape. The more
    slits you make the more damage you do to the mould. It will shorten
    the lifespan, so I am told. Where I learnt to make moulds, we didn't
    use anything and I remember them being hell to use. I learnt where
    to put by slits by taking all my old moulds to a mould maker and
    paid him to get them working. Now I know about 10% as much as a
    professional, but all my moulds work pretty good.
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