Casting silicone

Discussion in 'Replica Props' started by troopermaster, Jun 3, 2006.

  1. troopermaster

    troopermaster Well-Known Member

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    Quick question for you:-

    Can I make silicone castings from a silicone mould? If so,what's the best way to do it?
    Hints and tips appreciated.

  2. Blad

    Blad Sr Member

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    Airosol wax spray, best to do a few coats.

    You're better off making a solid mould though, plaster, resin, crystalcast etc.

  3. Darth Cross

    Darth Cross Well-Known Member

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    It should be similar to making a resin casting. But you'll need a good mold release agent. Something specifically made to keep silicone from bonding to itself. You'll also have to really be careful to avoid having air bubbles in the casting. You might have to do it in layers to prevent this.

  4. TK648

    TK648 Sr Member

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    What you seek is Pattern Release 202
    Ideal for patterns and coatings used in the preparation of silicone rubber molds without inhibition. It can be used on a wide variety of pattern materials (wood, epoxies, urethanes, polystyrene, plaster and rubber) to name a few. Available in an easy-to-apply aerosol spray. Maintains excellent surface detail. Air dries with no buffing required. in short its a sprayable petroleum jelly
    and will not let silicone stick to silicone if applied properly
    I use this all the time when making two part silicone molds

    Pattern Relaese 202

    S &H - Freeman charges standard published UPS/FedEx shipping rates (unless freight is specified). All orders under $25 are subject to a $5 small order fee. International orders are subject to a $250 minimum order. there will be a HAZ-MAT fee added to the shipping

  5. troopermaster

    troopermaster Well-Known Member

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    Thanks guys :thumbsup
  6. gladus63

    gladus63 Active Member

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    I use "vaselin oil" and it works well for my dental expander mold
  7. AnsonJames

    AnsonJames Sr Member

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    Smooth-on do a good release agent. There's also a spray called DP-100 specifically made for this purpose.
    Another way is to mix 95% Turpentine with 5% Vaseline - this will also work perfectly.


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