Customs: Resin Cast - How Strong?

Discussion in 'Creative General Discussion' started by Jaicen, Aug 18, 2010.

  1. Jaicen

    Jaicen Well-Known Member

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    I've been reading up about casting repro parts in Resin lately, and I keep seeing references to it being brittle.
    This got me wondering just how strong is it?

    For example, if I were to cast a whole figure, what sort of thickness would I need for an acceptable level of durability?

    Additionally, I see references to it being unsuitable for reproducing ball joints, again is this due to it's strength?
     
  2. Overhaulimus

    Overhaulimus Sword of Fury!

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    If it's too thin, then yea it is gonna be brittle.

    I do resin cast parts for my prop replicas and costumes, they are mostly solid cast pieces, I've dropped an entire E-11 Stormtrooper blaster on concrete, all it did was scratch it, that's because it was solid resin.

    Now, I'm using Alumillite Casting Plastic for my repro parts, so far I've only casted parts that are 1/8 inch thick, I tried to break one just to see how hard it would be, it took some work.

    But yea you don't want to use resin for ball joints, you will wind up snapping them off, for ball joints you just want to go ahead and grab some hobby ball joints or ripping em from other figures.
     
  3. Jaicen

    Jaicen Well-Known Member

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    That's the sort of info i'm looking for.
    Any idea what the minimum mPa's should be for good results?
    Do you think it would be possible to repro something like MP Starscream's hands for example?
     
  4. Overhaulimus

    Overhaulimus Sword of Fury!

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    Yea you can repro MP Screamer's hands, others have before.
     
  5. aurascope

    aurascope Kitbash Resource Indexer

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    Ball joints don't work because resin is stiff and brittle.
    (Materially defined as Hardness: the material's resistance to localised deformation)

    The socket has to be made of material that flexes outwards when the ball
    is entering and wraps back around the ball snugly when it is inside.

    You can buy ball joints alone at hobby shops. comes in all standard sizes.

    Resin casting works for mainly for parts that do not require much load-bearing properties.
     

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