cold molded canoe

Discussion in 'Boat Design' started by adriano, Mar 27, 2014.

  1. adriano
    Joined: Aug 2009
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    Location: italy

    adriano Senior Member

    Hi there,
    Does anybody have a tip how to simply take a wood veneer coldmoded conoe out of a building jig, without having lot of dismantelling work of the jig itself?
    Main problem is represented by the fact that we have in this case stringers running fore and aft although these are not fixed to the temporary frames.
    Canoe has tumblehome shape and pretty much inward curved bow ends.
    I appreciate any suggestions
    Adriano;)
     
  2. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    If you have tumblehome in the ends, you'll have to disassemble the building jib, unless it's a very small amount and the hull can be "sprung" a bit to clear. You can always cut the hull down the centerline and glue it back together once it's popped out of the jig.
     
  3. adriano
    Joined: Aug 2009
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    Location: italy

    adriano Senior Member

    Thanks Paul,
    Yeah, I think it's not easy to "reinvent the wheel".
    I thought there could be sone tricks when assembly the jig, my idea was to cut the frames in two halves to get them out easily by pulling/pushing them out once the canoe is ready?! I do not know whether anything better is feasable.
    I would like to avoit to cut the canoe.
    Adriano
     
  4. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    If it's strip planked, you have natural cut lines on the centerline. Who's to know under paint and putty? If it's to be finished bright, put a wide half oval over the cut line. I'd recommend some delicate work with a multi tool will get it do, if a bit slowly and tedious.
     
  5. upchurchmr
    Joined: Feb 2011
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    upchurchmr Senior Member

    I have done what PAR said, but used a Japanese pull type saw. The very thin blade makes a small easily steered cut.
    Then mold an outer stem in place - now you have a decorative accent and nothing to hide.
     
  6. adriano
    Joined: Aug 2009
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    Location: italy

    adriano Senior Member

    Thanks I'll consider that which could be an alternative.
    Adriano;)
     

  7. wet feet
    Joined: Nov 2004
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    Location: East Anglia,England

    wet feet Senior Member

    If you only intend to produce one canoe dismantling the building jig might be the best way forward.Its not the first time a builder has failed to realise that just like a moulded glass hull,cold moulded wood structures need to have draft included.
     
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