request : resin type information

Discussion in 'General Modeling' started by Marnok, Oct 31, 2011.

  1. Marnok

    Marnok New Member

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    Hi all,

    I'm making some mini spaceships for gaming - making originals, RTV mold, cast, that's working well for me.

    For the next stage I think I need a different resin. I'm using Easyflo 60 and, when set, it is still a bit flexible. As you know, some spaceships have pods on struts and I'm worried that the resin might flex too much if I have a thin strut with a heavy pod (think Blakes 7 Liberator).

    Is there a resin which sets more rigid, or something I can add to my resin to make it do that? Is this a property on the materials sheet related to the resin, if so which properties should I look for?
     
  2. kwalsh0000

    kwalsh0000 Sr Member RPF PREMIUM MEMBER

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    The resin I use is from a group called Raku tools, its a fairly stiff polyurthane resin, has a little bit of flex but nothing major.
    Have you tried maybe putting a small piece of metal into the strut area when casting to add support?
     
  3. Finhead

    Finhead Sr Member

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    You would look at the Shore hardness the higher the number the less flex. Rotocast (65D) from smooth on is fairly flexible - 65 Shore . Onyx from smooth on is very rigid once fully cured 80 shore.
     
  4. Marnok

    Marnok New Member

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    Thanks for the replies, I'll check out that resin and look at the Shore strengths generally for my next order.
     
  5. Mostly Fantasy

    Mostly Fantasy Well-Known Member RPF PREMIUM MEMBER

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    I'd add a wire to the support/legs. Even a rigid urethane, say, an 85D, can slowly warp over time. If you can insert mold a wire, you wouldn't have any worries down the line.
     
  6. Marnok

    Marnok New Member

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    I'll look into the wire, thanks. Might be possible to make a mold with the wire running through multiple parts, which sounds easy, but then things often sound easy until I actually do them.
     

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