Foam + Bondo Question.

Discussion in 'Marvel Costumes and Props' started by JokerOfArkham, Apr 20, 2015.

  1. JokerOfArkham

    JokerOfArkham New Member

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    I'm currently working on a foam Starlord helmet and was planning on using bondo to smooth out some of the edges where the foam meets. I know that bondo isn't recommended for foam as it's not exactly flexible. I figure though that for a helmet, it doesn't need to be overly flexible. My main question is this: Should I use plastidip before applying bondo or should I apply the bondo to the foam then plastidip the whole thing?
     
  2. Fireman Dan

    Fireman Dan New Member

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    Hey Joker
    Try this product called Epsilon from Smooth-on products. It's perfect for foam. It will harden your pieces and can be sanded and filled with spot putty. The product is self leveling, but I recommend using a good paint brush when applying
     
  3. JokerOfArkham

    JokerOfArkham New Member

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    Thanks for the suggestion!! I'd be totally game to try it out, but I'm trying to get this done before May 2nd, so I don't really have the time to order the Epsilon. I'm just wondering if the Bondo will adhere properly to the foam or if I would need to plastidip it first.
     
  4. PolyversalAri

    PolyversalAri Active Member RPF PREMIUM MEMBER

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    As someone who has personally experimented with Foam / Bondo it is not an ideal combination, but it will adhere if you rough up the foam edges a bit first.

    If you are going to try this method, definitely Plasti-Dip last. I think that Bondo over Plasti-Dip would make it more likely to fall apart since Plasti-Dip is meant to peel.
     
  5. Fireman Dan

    Fireman Dan New Member

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    Another solution is to make Rondo. A mix of 50% Resin and 50% Bondo. I know for a fact it will stick to foam treated with plastidip I recommend you work in small batches and wear a respirator.
     
  6. Mikki Haight

    Mikki Haight New Member

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    Rondo for working on a budget. Smooth-On's XTC-3D also works on foam but it won't build up like Epsilon does, just gives a fairly hard (albeit thin), glossy surface. I tried straight Bondo on resin-coated foam and the bondo all curled up at the edges. Always test on a scrap piece when in doubt. Good luck!
     

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