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Re:Wood for Birdmouth spars

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  • John Foster
    *From today s Sailing Anarchy Major Wood* /Here is the follow-up to the Lotta Wood story we did last week. Amazing technology
    Message 1 of 1 , Mar 28, 2006
      *From today's Sailing Anarchy <http://www.sailinganarchy.com/>

      Major Wood*

      /Here is the follow-up to the Lotta Wood story we did last week. Amazing
      technology that is all but forgotten. Enjoy./

      <http://www.sailinganarchy.com/fringe/2006/images/cambria.jpg>I had
      built the sawmill in Alaska specifically for long length Sitka Spruce
      <http://www.sitkaspruce.nl/> for mast and spars for classic yachts. For
      Cambria the Sitka Spruce logs were specially selected as it was required
      to have 40 ft long clear aircraft grade lumber. They were vacuum dried
      on site in Alaska, the spruce was then towed down on a barge to Seattle,
      traveled by train to New York and shipped across the Atlantic from
      there. In Holland TNO Delft, the institute for applied scientific
      research was involved in testing the individual boards using advanced
      stress wave technology and finally the best of the best were selected.
      The quality of the top boards was so amazing that we named the
      individual boards for Cambria; Beyoncé, Tyra, Brigitte, Anna, Diana and
      so on…

      12 metre long boards were then shipped to la Ciotat, France where Alex
      Laird of Classic Works <http://www.classicworks.fr/> had a group of
      dedicated craftsman lined up to take on the challenge to build this
      immense spar. Following authentic designs, the lay-out of the spar was
      made by Aurilien Lebas, the yard’s naval architect. 50 metre long press
      table was built and over 200 special clamps were manufactured for the
      job. First the 12 metre long pieces had to be scarfed up to almost 50
      metre length which required 192 scarf joints. The enormous boards were
      then planed with thickness and width. The mast is constructed hollow and
      so each piece had to be laminated in to a huge box configuration,
      consuming some 320kg of glue. The new spreaders where made in quarter
      sawn ash, the longest spreaders over 3 metre in length. Cambria’s
      Australian captain, Chris Barkham was closely involved in every step of
      the project. The passion and dedication to Cambria bonded the team and
      resulted in a really special spar for what is arguably the most
      beautiful large sloop in the world.

      The mast will be stepped in about 6 weeks and will give your readers an
      update then should you wish.


      John Lamments
      LVB Wood Processing

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