Lofting with CAD2000

Discussion in 'Wooden Boat Building and Restoration' started by JOFRACON, Apr 24, 2004.

  1. JOFRACON
    Joined: Apr 2004
    Posts: 4
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    Location: Florida, USA

    JOFRACON New Member

    I am new to CAD and experienced with the lofting process. I would like some help with the first station for lofting up the hull using CAD......from there it should be smooth sailing.
    Any one out there??
    John C
    email john4c@pacbell.net
     
    JOFRACON, Apr 24, 2004
    #1
  2. SailDesign
    Joined: Jan 2003
    Posts: 1,964
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    Location: Jamestown, RI, USA

    SailDesign Old Phart! Stay upwind..

    Put simply, not to mention bluntly, CAD is a bad tool for lofting.
    CAD is handy for developing shapoes that are mathematically fair (although can still be "unfair" in boatbuilders' terms). If you really want to loft a fair shape, I'm afraid the floor is your friend.
    A great deal of effort is still needed with CAD to fair a hull. True, you can "fair" one station quite easily, even a whole boatload of stations individually, but when you connect them, there will be unfairness. Trying to sort out that mess is something I never want to do again :)
    When developing a new hullform, I always work on the "less is best" philosophy. The mesh should be composed of the fewest points required to define a shape. LArge numbers of points are impossible to fair, and that is what you will get by feeding in a table of offsets to a CAD program.
    Steve
     
    SailDesign, Apr 25, 2004
    #2
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