building a hull liner

Discussion in 'Fiberglass and Composite Boat Building' started by brokensheer, May 16, 2013.

  1. brokensheer
    Joined: Jun 2009
    Posts: 201
    Likes: 3, Points: 18, Legacy Rep: 14
    Location: So. Md

    brokensheer Senior Member

    I am thinking about freshening up a 15' boat with a fiberglass hull liner, I plan to pull skins of the ext. of the hull and place them inside after filletting and such is complete, any more thoughts as to speeding up the process? Thanks
     
  2. tunnels

    tunnels Previous Member

    Yes you can do it !! famous last words !!

    Long time ago when I lived in Tahiti we looked at just such a thing for the 17 foot fishing boat we were making !!, a complete deck and internal liner but it would have incorporated the deck and all of the boats interior, seat bases , floors and had floatation built onto it and just simply joined along the gunwale same as a hull deck join and along the tops of wooden stringers with semi flexible adhesive like plexus's !!
    Had a separate part of the after end of the fore deck! where you sat and drove from so you feet and legs went under same as normal !!But everything as in the deck and internal moulded liner . Its done or used to be done on small sale boats !! never seen on bigger boats but theres absolutely no reason why it could not be done at all!!.
    Just remember all that surface area needs to be glass and all that glass is weight, so flat panels use foam core with a thin skin each side and make it thicker for floors and seated areas !! :D
     
  3. keith66
    Joined: Sep 2007
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    Location: Essex UK

    keith66 Senior Member

    Sounds like a huge amount of work to make a boat twice as heavy.
    Why notsand the inside clean & flowcoat it, darn sight cheaper & quicker.
     
  4. brokensheer
    Joined: Jun 2009
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    Location: So. Md

    brokensheer Senior Member

    this boat should sell at a high price point, it should also have a fine fit and finish and we are trying to get away from building "unmolded" parts, Keith66 you have a good point !, thanks
     
  5. keysdisease
    Joined: Mar 2006
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    Location: South Florida USA

    keysdisease Senior Member

    Confused? Is this a one off to "freshen up" your boat or are you tooling an inner liner for a production boat?

    If one off Keith has the right idea, faster, cheaper, lots lighter.

    Steve
     
  6. brokensheer
    Joined: Jun 2009
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    Location: So. Md

    brokensheer Senior Member

    this is a production boat sorry for the confussion, , she come from a four pcs hull mold, we buildt a stringer grillage mold, as for the liner I was going to help myself along by pulling skins off of the hulls ext, and fitting them inside the boat, being she is so small she has minimal int furniture. , a rear thwart, engine splashwell, a base molded for ther console, and a forward seating deal or a longer seat on the console,!
    this hull has a nice amount of tumblehome, a broken shear line and a fair amount of flair!
     

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

    gonzo Senior Member

    The hull sections will have the rough surface on the inside which defeats the purpose of a liner. You need a different mold for a liner that will put the finished surface inside. If this is a production boat, a second set of molds is the proper way of doing it. Otherwise, it will increase the time and materials and make the boat too expensive.
     

  8. brokensheer
    Joined: Jun 2009
    Posts: 201
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    Location: So. Md

    brokensheer Senior Member

    thanks Gonzo, we pull skins off the outside of the bow section , hang them on the inside as well as other mods and it makes a nice plug for the liner mold, we do not intend to compete with boats like carolina skiff, in which case you would be correct on price point ! this boat has a bit different market!
     
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