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  1. #46
    Join Date
    Aug 2010
    Location
    New Jersey, USA
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    767

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    Quote Originally Posted by b.o.a.t. View Post
    G'day
    How much overlap on each seam?
    do you need to double each seam over into itself like the drawing attached?
    or is a simple overlap sufficient ?
    AJ, I did a simple overlap of about 10mm. That width matched up nicely with the double stick tape (virtually the same width) and the maximum stitch width of my sewing machine, 7mm.

    I felt comfortable with that narrow overlap because I'm using a triple point zig-zag stitch. If your new/old machine will do a plain zig-zag, you might want to widen the overlap to allow for two rows. If it only does straight stiches, then use three rows.

    In my research, I never encountered a recommendation to overlap per your diagram, at least not for connecting the panels together. Check out Sailrite.com's free vidoes on their site. They have a great tutorial on seam stitching.
    Dave
    StorerBoat Builder, Sailor, Enthusiast
    Dave's GIS Chronicles | Dave's Lugs'l Chronicles | Dave's StorerBoat Forum Thread

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  3. #47
    Join Date
    Jul 2005
    Location
    'Delaide, Australia
    Age
    65
    Posts
    8,138

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    Howdy,

    Pro made sails I've watched being made - and ordered seem to have about 15 to 18mm overlap with a row of stitching just along both of the sailcloth edging. So every seam has two lines of stitching placed to prevent the cloth edges being picked up by ropes etc.

    I think that is fairly conventional in Australian manufactured sails. It doesn't mean other schemes won't work of course.

    MIK

  4. #48
    Join Date
    Aug 2010
    Location
    New Jersey, USA
    Posts
    767

    Default Lots o' patches

    I designed, cut, and sewed reinforcement patches last weekend. I still have two more to install, but they're made up and ready to go. I went with simple triangles, but chose not to be very symmetrical. This pic looks a little awkward because they're all so close to each other. Spread out, I think they balance with each other and the overall sail nicely.

    Dave
    StorerBoat Builder, Sailor, Enthusiast
    Dave's GIS Chronicles | Dave's Lugs'l Chronicles | Dave's StorerBoat Forum Thread

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