Epoxy fill for hardware mounting

Discussion in 'Materials' started by youngtrout, Dec 13, 2014.

  1. youngtrout
    Joined: Nov 2008
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    Location: anchorage

    youngtrout Junior Member

    Hello again, I had the lightweight fill thread and now I'm looking to double check my heavy weight fill

    Looking for a fill that will stand up to hardware installation. Drilling tapping etc.

    In the past I use the 403 west systems fill. I'm also playing with adding chopped carbon to the mix.

    I've also heard about folks using milled fiberglass

    Thanks again
     
  2. upchurchmr
    Joined: Feb 2011
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    upchurchmr Senior Member

  3. youngtrout
    Joined: Nov 2008
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    Location: anchorage

    youngtrout Junior Member

    Thanks. I downloaded it. I got started with composites with a little rowing skiff. I since have played around with vacuum bagging. Came here to ask around because I know you guys know a ton. Thanks. I'll look in the PDF
     
  4. upchurchmr
    Joined: Feb 2011
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    upchurchmr Senior Member

    Many of us got our start from that book.
    That is why you will often hear the same suggestion, over and over.....
    The website (westsystem.com) has discussions and their "Epoxyworks" is a e-pub which has lots of articles.
    http://www.westsystem.com/ss/boat-building/ is articles from older Epoxyworks issues.
     

  5. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    Skip the chopped carbon, you're just not going to get much from it, unless it's content is exceptionally high, which is very difficult (read imposable) to do by hand.

    The filler choices depend on application to a degree, but one thing is always the same - the silica content is simply to control viscosity. Milled fibers, cotton flock and wood flour are the usual choices, in concert with silica. Some will add other things, for other reasons, but generally these will be the standard bunch.

    Do yourself a favor and download the free "User's Guides" at westsystem.com and the "Epoxy Book" at systemthree.com, both of which will cover filler materials and their use. As to exact percentages, well this is dependent on several factors, so a bit of experimenting is necessary, until you gain enough experience with them.
     
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