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Foam atick to RTV silicone?

Discussion in 'Molding and Casting' started by BigSwede, Jan 7, 2007.

  1. BigSwede

    BigSwede Member

    Before I ruin a form that took time and money to make, does anyone know if foam sticks to RTV silicone? I am casting a head of a pretty large game bird, and my idea was to fill the "beak part" of the form with ordinary urethane plastic (don´t know the name in english for it, but I use it to cast jaw sets, bird heads and more) and than fill the actual "head part" with foam. (After the beak part is cured) Do I need a separator or is it at all possible? I have a mother mold to support the RTV rubber.
    BigSwede
     
  2. BigSwede

    BigSwede Member

    Sorry, the headline should read: "Foam STICK to RTV silicone?"
    BigSwede
     

  3. Roadkill

    Roadkill Jackalopes are Real !!!!!!!!!!!!

    Foam will not stick to silicon, but will stick to urethane rubber. YOu need a good seperator on the mold. Spray the release you can get from synair that all the supply companies sell. YOu could put a light coat of wax in the head part and a light spray in the bill area.
     
  4. BigSwede

    BigSwede Member

    Thank you Roadkill.