Which is the better way to laminate transom?

Discussion in 'Fiberglass and Composite Boat Building' started by Skua, Sep 17, 2014.

  1. Skua
    Joined: Apr 2013
    Posts: 147
    Likes: 5, Points: 18, Legacy Rep: 73
    Location: Hunt's Pier WW NJ

    Skua Senior Member

    The transom has multiple shallow angles, hence the number of core sections. Each core section is seperated by an epoxy line, as are the stringers. The section in the pictures is 110 inches wide by 38 inches high, and at the center is 2 layers 3/4 MDO, with epoxy and glass fibers for a bond layer. The rest is 3/4 BCX, with the corner triangles 3/8 BCX. The outer skin varies from 3/4 at the bottom to 3/8 at the top of the core, where it kicks back towards the stern, and then from there appears to be a single layer of very heavy roven woving .

    I'm using 2400 triax and epoxy, 24in wide. I was wondering if horizontaly or verticaly would be the way to go, with a 6in tab onto the hull and gunnels.
     

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  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    With the triax it doesn't make much of a difference. I think the original was probably done with a chopper gun, so the repair is structurally much better either way.
     
  3. Skua
    Joined: Apr 2013
    Posts: 147
    Likes: 5, Points: 18, Legacy Rep: 73
    Location: Hunt's Pier WW NJ

    Skua Senior Member

    I was leaning toward verticaly as it would be smaller sheets to deal with. And I'm not sure that it was even that good. It was really thin mat, it peeled back like a sheet of paper.
     
  4. gonzo
    Joined: Aug 2002
    Posts: 14,449
    Likes: 640, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    You should be able to do it in one piece. However, if it is not convenient, make the pieces slightly larger than each panel and let them overlap.
     

  5. Skua
    Joined: Apr 2013
    Posts: 147
    Likes: 5, Points: 18, Legacy Rep: 73
    Location: Hunt's Pier WW NJ

    Skua Senior Member

    Thank you.
     
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